Updated Aug 15, 2026
Best Subreddits for 3D Printing in 2026
RedditFind ranked 3D printing communities for printer brands, material and accessory sellers, makers, print farms, and CAD or slicer product teams.
Why this map matters
3D printing buyers judge the whole workflow: machine, material, model, slicer, calibration, failure recovery, and support.
Reddit threads show users troubleshooting first layers, comparing filament and resin behavior, tuning slicers and calibration, and judging finished parts. Those discussions expose tradeoffs that specification sheets do not.
This guide separates broad maker communities from functional-print, printer-brand, resin, software, and print-business discussions so teams can research the right audience before joining a conversation.
3D printer brands
Use RedditFind evidence to identify subreddits worth researching, monitoring, and joining for 3D printer brands.
filament, resin, and 3D printing accessory sellers
Use RedditFind evidence to identify subreddits worth researching, monitoring, and joining for filament, resin, and 3D printing accessory sellers.
hobbyist makers and prosumers
Use RedditFind evidence to identify subreddits worth researching, monitoring, and joining for hobbyist makers and prosumers.
Top 5
The 3D printing communities to read first
Start with the broad 3D printing hub, then compare functional-print, Prusa, resin-printing, and Ender 3 communities for distinct workflows and expectations.
#1 · 99%
r/3dprinting
Reddit’s largest general 3D printing community, covering printers, materials, models, calibration, failure troubleshooting, industry news, and creative projects. Content ranges from beginner questions to DIY printers, multi-material systems, and material experiments. · Read first, then participate only when the rules allow it.
1M
Weekly visitors
22K
Weekly contributions
Why RedditFind recommended it
With 1M weekly visitors and 22K contributions, it leads this batch of communities in both scale and discussion density, making it an ideal primary research hub for brands, materials, accessories, software, model platforms, and print service teams. But the self-promo rules are strict, so purchase advice and promotional content need to go through the relevant megathread or be posted sparingly.
Main content
Reddit’s largest general 3D printing community, covering printers, materials, models, calibration, failure troubleshooting, industry news, and creative projects. Content ranges from beginner questions to DIY printers, multi-material systems, and material experiments.
Representative posts
#2 · 91%
r/functionalprint
A large functional 3D printing community that only discusses prints with clear practical use, such as repair parts, jigs, household tools, sensor enclosures, and replacement parts. Decorative, toy, and purely display-oriented content is tightly restricted. · Read first, then participate only when the rules allow it.
131K
Weekly visitors
1.4K
Weekly contributions
Why RedditFind recommended it
With 131K weekly visitors and 1.4K contributions, it is highly active, and users are concentrated around functional parts, material durability, and real-world use cases. It is especially well suited for researching demand around materials, accessories, model products, and Etsy/Shopify sellers. It ranks slightly below r/3Dprinting because it is not a fit for general printer-buying advice or direct promotion.
Main content
A large functional 3D printing community that only discusses prints with clear practical use, such as repair parts, jigs, household tools, sensor enclosures, and replacement parts. Decorative, toy, and purely display-oriented content is tightly restricted.
#3 · 89%
r/prusa3d
The core community of the Prusa ecosystem, discussing Prusa printers, Prusament, PrusaSlicer, CORE One, XL, INDX, multi-material systems, and firmware updates. Users are generally willing to go deep on hardware design, after-sales support, materials, and open-source projects. · Read first, then participate only when the rules allow it.
69K
Weekly visitors
2.5K
Weekly contributions
Why RedditFind recommended it
With 69K weekly visitors and 2.5K contributions, the contribution volume is very high, showing that this is not just a casual browsing community but one with substantial in-depth discussion. It is highly suitable for research by Prusa-related brands, materials, slicer software, accessories, and high-end prosumer product teams, but topics need to be strongly tied to Prusa.
Main content
The core community of the Prusa ecosystem, discussing Prusa printers, Prusament, PrusaSlicer, CORE One, XL, INDX, multi-material systems, and firmware updates. Users are generally willing to go deep on hardware design, after-sales support, materials, and open-source projects.
Representative posts
#4 · 88%
r/resinprinting
The main community for resin 3D printing such as SLA/MSLA, covering resin printers, supports, exposure, washing and curing, safety, figurine models, and resin materials. The community is explicitly SFW and places strong emphasis on creator attribution and safe handling. · Read first, then participate only when the rules allow it.
67K
Weekly visitors
1.7K
Weekly contributions
Why RedditFind recommended it
With 67K weekly visitors and 1.7K contributions, it is strong in both scale and activity, making it a key research point for resin printers, photopolymer resin, wash-and-cure equipment, slicing, and print services. Compared with general 3D printing communities, its users are more concentrated on resin hardware and post-processing, but it is not suitable for broad FDM topics.
Main content
The main community for resin 3D printing such as SLA/MSLA, covering resin printers, supports, exposure, washing and curing, safety, figurine models, and resin materials. The community is explicitly SFW and places strong emphasis on creator attribution and safe handling.
#5 · 84%
r/ender3
The largest community for the Ender 3 series, focused on Ender 3 calibration, mods, Klipper, hotends, mainboards, bed leveling, failure troubleshooting, and upgrade paths. Users range from beginners to advanced hobbyists pushing the Ender to its limits. · Read first, then participate only when the rules allow it.
46K
Weekly visitors
1K
Weekly contributions
Why RedditFind recommended it
With 46K weekly visitors and 1K contributions, it remains one of the most worthwhile communities in the Creality/Ender ecosystem. It is valuable for research on accessories, firmware, hotends, fans, mainboards, linear rails, materials, and entry-level printers, but the content is more focused on the Ender 3 than the broader 3D printing market.
Main content
The largest community for the Ender 3 series, focused on Ender 3 calibration, mods, Klipper, hotends, mainboards, bed leveling, failure troubleshooting, and upgrade paths. Users range from beginners to advanced hobbyists pushing the Ender to its limits.
Representative posts
Use cases
How different teams should use the map
Separate listening, comparison, support research, and careful participation before posting.
| Goal | Priority communities | Primary use | Recommended format |
|---|---|---|---|
| Buyer-language research | r/3dprinting, r/functionalprint, r/prusa3d, r/resinprinting, r/ender3 | Read how people describe problems, comparisons, objections, and trust before purchase. | Internal notes and careful replies when rules allow. |
| Product-page and support copy | r/3dprinting, r/functionalprint, r/prusa3d, r/resinprinting, r/ender3, r/3dprinter, r/3dprintmything, r/functionalprints | Turn repeated questions into FAQ, comparison copy, and support language. | No direct pitch; use clear evidence and disclosure. |
| Participation risk check | r/3dprinting, r/functionalprint, r/prusa3d, r/resinprinting, r/ender3 | Review official About and Rules text before a brand account enters a subreddit. | Modmail or disclosed expert help when appropriate. |
Operating clusters
Community clusters by job to be done
The clusters separate general printing, functional applications, printer ecosystems, resin workflows, software tools, and print-service businesses.
Main hub for general 3D printing
Recommended mix · 3 subreddits
How to use this cluster
- Treat r/3Dprinting as your industry radar first: track hot posts, material debates, printer choices, failure cases, and links to new model platforms.
- Use r/3Dprinter and r/3D_Printing for lighter-weight content testing, especially beginner tutorials, model tools, and material know-how.
- For any brand or product content, minimize the promotional feel and rely on test data, open-source files, failure postmortems, and real photos to build trust.
Key content to read
- Printer buying and upgrades
- Material experience and material parameters
- Multicolor printing, AMS/toolheads, nozzle and hotend issues
- Model sharing and print failure postmortems
- Beginner learning paths and calibration tutorials
Representative posts and communities
Representative posts
- Does this PET bottle-to-3D-printer filament project actually work?
- I created the World's First Double Delta 3D Printer!
- Built a custom 6-toolhead multi-material printer <5s changes, no AMS-style waste! (free files + full breakdown)
- New to 3D printing, anyways to remove these bleed lines? I have tried doubling the flushing volume, but its still there.
- Free tool to lengthen/shorten a printed part's STL without re-modeling it — feedback wanted
| Community | Fit | Why relevant |
|---|---|---|
| r/3dprinting | Match 98% | Approximately 1M visitors and 22K contributions, with both scale and discussion density, covering most of the keywords in the user strategy. |
| r/3dprinter | Match 73% | Approximately 45K visitors and 1.1K contributions, with solid activity, but the content is more scattered and requires noise filtering. |
| r/3d_printing | Match 70% | Approximately 4.8K visitors and 464 contributions, with smaller traffic but a high interaction ratio, making it suitable for small-scale content validation. |
Functional parts, accessories, and real-world use cases
Recommended mix · 3 subreddits
How to use this cluster
- Lead with the specific problem solved, rather than showing off technique or appearance.
- Accessory sellers should focus their research on brackets, jigs, replacement parts, storage solutions, sensor enclosures, tool organization, and outdoor/in-vehicle applications.
- If you post model links, it is best to include the design process, material selection, and load-bearing or long-term use results.
Key content to read
- Repair parts for everyday items
- Tools and jigs
- Workshop/shop accessories
- Enclosures for sensors, electronics, and small automation
- Functional material applications such as TPU/PETG/ASA
Representative posts and communities
Representative posts
- I was sick of things falling into the cavity of my backpack when I got my bottle out
- Water level sensor using IKEA door/window sensor
- Replacement knob for an air fryer. 6 months in and PETG holds up better than the original!
- I built a 3D-printable automatic plant watering valve
- Twist Lock Dust Collection Hose System
| Community | Fit | Why relevant |
|---|---|---|
| r/functionalprint | Match 91% | Approximately 131K visitors and 1.4K contributions, with strong traffic and quality, but the rules are strict and the item must be truly functional. |
| r/functionalprints | Match 61% | Approximately 7.5K visitors and 62 contributions, with decent traffic but few posts, making it suitable for low-frequency, high-quality case studies. |
| r/3dprintsintheshop | Match 58% | Approximately 1.2K visitors and 23 contributions, with limited activity but a highly vertical audience that is useful for evaluating accessory and tool opportunities. |
Brand device ecosystems: Prusa, Ender, Anycubic
Recommended mix · 3 subreddits
How to use this cluster
- Use brand communities as product feedback pools: watch upgrade controversies, after-sales pain points, material compatibility, firmware issues, and why users switch.
- If brands or sellers participate, disclose identity transparently and avoid sounding like customer service scripts or attacking competitors.
- Prioritize contributing compatibility lists, troubleshooting workflows, material parameters, and firmware/slicer configurations.
Key content to read
- Prusa CORE One, XL, INDX, multi-material systems
- Ender 3 mods, Klipper, hotends, linear rails, bed leveling
- Anycubic Photon exposure, LCD, FEP/ACF, resin parameters
- Brand after-sales support and user trust
- Material and nozzle wear
Representative posts and communities
Representative posts
| Community | Fit | Why relevant |
|---|---|---|
| r/prusa3d | Match 89% | Approximately 69K visitors and 2.5K contributions, with very high discussion participation, especially suitable for product teams digging into feedback. |
| r/ender3 | Match 82% | Approximately 46K visitors and 1K contributions, highly valuable for research on accessories, firmware, materials, and migration to newer beginner models. |
| r/anycubicphoton | Match 68% | Approximately 7.7K visitors and 195 contributions, mid-sized in scale but with highly concentrated issues, making it suitable for vertical device insight. |
Resin printing, post-processing, and print quality
Recommended mix · 3 subreddits
How to use this cluster
- Build technical content around exposure, supports, washing and curing, resin safety, and model quality.
- Resin material and hardware teams should use comparison testing, failure cases, and safety guides to build trust.
- Print service sellers should focus research on Etsy finished-product quality, uncured resin, post-processing, and customer safety concerns.
Key content to read
- SLA/MSLA print parameters
- Support settings and failure diagnosis
- Resin material comparisons
- Washing, curing, and safe handling
- Model printing, painting, and delivery quality
Representative posts and communities
Representative posts
| Community | Fit | Why relevant |
|---|---|---|
| r/resinprinting | Match 87% | Approximately 67K visitors and 1.7K contributions, strong in both scale and vertical relevance, making it the top choice for the resin category. |
| r/3dprintmything | Match 69% | Approximately 3.5K visitors and 522 contributions, with strong transaction-oriented interaction that reveals real buyer requirements for resin print services. |
| r/anycubicphoton | Match 68% | Approximately 7.7K visitors and 195 contributions, and although smaller than r/resinprinting, the issues are more device-specific and easier to translate into product requirements. |
CAD, slicers, model libraries, and toolchains
Recommended mix · 4 subreddits
How to use this cluster
- Trade free prototypes, open-source repositories, downloadable samples, and clear limitation notes for real feedback.
- Well suited to low-frequency, in-depth participation by teams working on CAD, slicers, STL repair, model management, parametric generators, and G-code tools.
- Do not just drop a link; explain the workflow, the pain point it solves, and how it differs from existing tools.
Key content to read
- STL/3MF management and search
- Parametric model generators
- PrusaSlicer/Orca/Cura workflows
- Custom G-code, firmware, and experimental slicing
- Model repair, scaling, and structural optimization
Representative posts and communities
Representative posts
- Free tool to lengthen/shorten a printed part's STL without re-modeling it — feedback wanted
- Just published my research on 3D printed threads!
- FEM-GradientInfill change the local line width based on the simulated stresses
- INDX got me printing proteins again, so I wrote a tool to make the files
- Meshory — the 3D print file manager I've been building is out
| Community | Fit | Why relevant |
|---|---|---|
| r/3dprinting | Match 98% | Approximately 1M visitors and 22K contributions, allowing fast validation of whether tool-related content has mainstream demand. |
| r/prusa3d | Match 89% | Approximately 69K visitors and 2.5K contributions, especially suitable for observing high-standard feedback from advanced users on toolchains. |
| r/3d_printing | Match 70% | Approximately 4.8K visitors and 464 contributions, with a small community but dense feedback. |
| r/advanced_3dprinting | Match 63% | Approximately 1.4K visitors and 24 contributions, small in scale but with rules that encourage valuable self-promotion and open-source sharing. |
Print services, print farms, and seller opportunities
Recommended mix · 4 subreddits
How to use this cluster
- Use r/3Dprintmything to research real orders: location, materials, budget, lead time, post-processing, risk, and payment methods.
- Watch r/3Dprinting, r/resinprinting, and r/functionalprint to see which needs evolve from personal use into small-batch sales.
- Build standardized service content: quotes, material recommendations, QC photos, post-processing notes, delivery timelines, and refund policies.
Key content to read
- cosplay and model printing demand
- Resin parts, functional parts, small-batch ASA/PETG printing
- Quality issues for Etsy/Shopify/Amazon sellers
- print farm file management and capacity
- Scam prevention, trust, and after-sales support
Representative posts and communities
Representative posts
| Community | Fit | Why relevant |
|---|---|---|
| r/3dprinting | Match 98% | Approximately 1M visitors and 22K contributions, providing the largest sample size, but hard-sell advertising is not allowed. |
| r/functionalprint | Match 91% | Approximately 131K visitors and 1.4K contributions, with abundant functional scenarios, though promotional restrictions require care. |
| r/resinprinting | Match 87% | Approximately 67K visitors and 1.7K contributions, active enough and with clear pain points around commercial-quality output. |
| r/3dprintmything | Match 69% | Approximately 3.5K visitors and 522 contributions, with contribution volume higher than expected for its traffic, indicating very active transactions and replies. |
Participation
Where brands should be careful
Posting limits vary by community. Check the captured rules for promotion, links, surveys, low-effort content, and other topic-specific restrictions before participating.
| Community | Promotion risk | Suitable | Avoid |
|---|---|---|---|
| r/3dprinting | High; rules mention commercial posts or brand promotion, affiliate links, referral links, or external links, low-effort posts, spam, or AI-generated content. | Use it for: it leads this batch of communities in both scale and discussion density, making it an ideal primary research hub for brands, materials, acc… | Avoid commercial posts or brand promotion, affiliate links, referral links, or external links, low-effort posts, spam, or AI-generated content; keep any participation specific, disclosed, and useful. |
| r/functionalprint | High; rules mention commercial posts or brand promotion. | Use it for: it is highly active, and users are concentrated around functional parts, material durability, and real-world use cases. It is especially we… | Avoid commercial posts or brand promotion; keep any participation specific, disclosed, and useful. |
| r/prusa3d | High; rules mention commercial posts or brand promotion, affiliate links, referral links, or external links, sales, transactions, or DM solicitation. | Use it for: the contribution volume is very high, showing that this is not just a casual browsing community but one with substantial in-depth discussio… | Avoid commercial posts or brand promotion, affiliate links, referral links, or external links, sales, transactions, or DM solicitation; keep any participation specific, disclosed, and useful. |
| r/resinprinting | High; rules mention commercial posts or brand promotion, sales, transactions, or DM solicitation, uncivil or disrespectful replies. | Use it for: it is strong in both scale and activity, making it a key research point for resin printers, photopolymer resin, wash-and-cure equipment, sl… | Avoid commercial posts or brand promotion, sales, transactions, or DM solicitation, uncivil or disrespectful replies; keep any participation specific, disclosed, and useful. |
| r/ender3 | High; rules mention commercial posts or brand promotion, affiliate links, referral links, or external links, misinformation or misleading claims. | Use it for: it remains one of the most worthwhile communities in the Creality/Ender ecosystem. It is valuable for research on accessories, firmware, ho… | Avoid commercial posts or brand promotion, affiliate links, referral links, or external links, misinformation or misleading claims; keep any participation specific, disclosed, and useful. |
Full ranking
The full community list from the RedditFind run
Use the full ranking as a research list across printers, filament, resin, calibration, CAD, slicers, model libraries, functional parts, and print farms.
| Rank | Community | Score | Weekly visitors | Weekly contributions | Community content |
|---|---|---|---|---|---|
| 1 | r/3dprinting | 99% | 1M | 22K | Reddit’s largest general 3D printing community, covering printers, materials, models, calibration, failure troubleshooting, industry news, and creative projects. Content ranges from beginner questions to DIY printers, multi-material systems, and material experiments. With 1M weekly visitors and 22K contributions, it leads this batch of communities in both scale and discussion density, making it an ideal primary research hub for brands, materials, accessories, software, model platforms, and print service teams. But the self-promo rules are strict, so purchase advice and promotional content need to go through the relevant megathread or be posted sparingly. |
| 2 | r/functionalprint | 91% | 131K | 1.4K | A large functional 3D printing community that only discusses prints with clear practical use, such as repair parts, jigs, household tools, sensor enclosures, and replacement parts. Decorative, toy, and purely display-oriented content is tightly restricted. With 131K weekly visitors and 1.4K contributions, it is highly active, and users are concentrated around functional parts, material durability, and real-world use cases. It is especially well suited for researching demand around materials, accessories, model products, and Etsy/Shopify sellers. It ranks slightly below r/3Dprinting because it is not a fit for general printer-buying advice or direct promotion. |
| 3 | r/prusa3d | 89% | 69K | 2.5K | The core community of the Prusa ecosystem, discussing Prusa printers, Prusament, PrusaSlicer, CORE One, XL, INDX, multi-material systems, and firmware updates. Users are generally willing to go deep on hardware design, after-sales support, materials, and open-source projects. With 69K weekly visitors and 2.5K contributions, the contribution volume is very high, showing that this is not just a casual browsing community but one with substantial in-depth discussion. It is highly suitable for research by Prusa-related brands, materials, slicer software, accessories, and high-end prosumer product teams, but topics need to be strongly tied to Prusa. |
| 4 | r/resinprinting | 88% | 67K | 1.7K | The main community for resin 3D printing such as SLA/MSLA, covering resin printers, supports, exposure, washing and curing, safety, figurine models, and resin materials. The community is explicitly SFW and places strong emphasis on creator attribution and safe handling. With 67K weekly visitors and 1.7K contributions, it is strong in both scale and activity, making it a key research point for resin printers, photopolymer resin, wash-and-cure equipment, slicing, and print services. Compared with general 3D printing communities, its users are more concentrated on resin hardware and post-processing, but it is not suitable for broad FDM topics. |
| 5 | r/ender3 | 84% | 46K | 1K | The largest community for the Ender 3 series, focused on Ender 3 calibration, mods, Klipper, hotends, mainboards, bed leveling, failure troubleshooting, and upgrade paths. Users range from beginners to advanced hobbyists pushing the Ender to its limits. With 46K weekly visitors and 1K contributions, it remains one of the most worthwhile communities in the Creality/Ender ecosystem. It is valuable for research on accessories, firmware, hotends, fans, mainboards, linear rails, materials, and entry-level printers, but the content is more focused on the Ender 3 than the broader 3D printing market. |
| 6 | r/3dprinter | 78% | 45K | 1.1K | A general 3D printing community covering print showcases, buying questions, model sharing, beginner experiences, and printer discussions such as Bambu/Ender/Prusa. Overall it is looser than r/3Dprinting, and the quality of popular content varies more. With 45K weekly visitors and 1.1K contributions, activity is solid and it helps supplement observations of ordinary users’ buying and beginner needs. It ranks below the core communities because the topics are more mixed, and the sample contains more showcase posts and loosely structured discussion. |
| 7 | r/3dprintmything | 76% | 3.5K | 522 | A 3D printing service marketplace community, with people who need items printed on one side and people willing to take orders, print, and ship on the other. Posts usually include location tags, and common requests include model parts, cosplay, resin parts, small-batch components, and custom printing. With only 3.5K weekly visitors but 522 contributions, it shows very high interaction density around transactions and quote requests. It is highly suitable for print farm operators, print service providers, and Etsy/Amazon sellers researching real pricing, lead time, materials, and trust issues. |
| 8 | r/functionalprints | 74% | 7.5K | 62 | Another functional 3D printing community, with a more constructive tone, focused on sharing prints with real practical use, household tools, open-source gadgets, and useful models. The rules allow discussion of AI-assisted work, but require transparency. With 7.5K weekly visitors and 62 contributions, traffic is lower than r/functionalprint, but the high-upvote samples are well suited for researching productization of functional prints and open-source hardware. It scores in the upper-middle range because the positioning is highly aligned with functional printing and maker business, though active contributions are relatively low. |
| 9 | r/3d_printing | 72% | 4.8K | 464 | A small-to-mid-sized general 3D printing community discussing models, tools, software, print showcases, beginner questions, and MakerWorld/Printables links. The rules are relatively clear and allow limited self-promotion as long as it is properly labeled. With 4.8K weekly visitors and 464 contributions, visitor volume is modest but contribution density is high, showing that the community still has discussion energy. It is suitable for lightweight feedback for software tools, model generators, small brands, and creators, but its influence is far below r/3Dprinting. |
| 10 | r/ender3v2 | 68% | 11K | 273 | A user community for the Ender 3 V2, with topics focused on bed leveling, CR Touch/BLTouch, Klipper, hotends, support settings, mods, and whether older machines are worth upgrading. There is a lot of beginner help and old-machine maintenance content. With 11K weekly visitors and 273 contributions, it is fairly active within the Ender niche. It is suitable for researching accessories, firmware, sensors, mod parts, and entry-level materials, but has narrower coverage than r/ender3. |
| 11 | r/ender3v3se | 66% | 6.9K | 248 | A user community for the Ender 3 V3 SE/KE, covering new machine impressions, Navaismo/Nebula/Klipper, fan upgrades, leveling, nozzles, first layers, and slicer settings. The community has a high concentration of beginners. With 6.9K weekly visitors and 248 contributions, it performs well for a niche model community. It is suitable for researching accessories, firmware, materials, and beginner education content for newer Creality machines, but its brand and model scope is limited. |
| 12 | r/anycubicphoton | 65% | 7.7K | 195 | A community for Anycubic Photon series resin printers, discussing exposure tests, FEP/ACF, LCDs, firmware, after-sales support, resin parameters, and print failures. It leans more toward brand-device support and troubleshooting. With 7.7K weekly visitors and 195 contributions, activity is stable and the issues are highly specific. It is especially suitable for research on the Anycubic ecosystem, resin materials, repair parts, after-sales experience, and slicer parameters, but not for FDM or broad resin art content. |
| 13 | r/ender3v3ke | 60% | 4.8K | 98 | A dedicated Ender 3 V3 KE community, mainly focused on KE troubleshooting, leveling, VFA artifacts, extrusion, side-mounted spool holders, hotends, and OrcaSlicer settings. The community rules require posts to be KE-related only. With 4.8K weekly visitors and 98 contributions, it has a certain level of activity for a niche model community. It is suitable for researching after-sales issues, accessories, slicer configurations, and stability problems among KE users, but its market coverage is smaller than r/ender3 and r/ender3v3se. |
| 14 | r/3dprint | 58% | 3.1K | 67 | A small general 3D printing community where common content includes model sharing, file management tools, print service ideas, Bambu/Ender buying decisions, and practical small items. Overall it feels more like a supplementary channel. With 3.1K weekly visitors and 67 contributions, activity is average, but the sample includes posts on file management, print farms, and STL tools that are valuable for product teams. It ranks in the middle because the signal is useful but the community is relatively small. |
| 15 | r/ender3pro | 55% | 2.5K | 64 | An Ender 3 Pro community whose content is mainly beginner help, first layers, nozzle clogs, mainboards/firmware, Sprite extruder, CR Touch, and print failures. Overall it leans toward basic troubleshooting. With 2.5K weekly visitors and 64 contributions, activity is lower than in the larger Ender communities, but it still reveals many pain points among low-cost printer users. It is suitable for research on entry-level accessories, repair parts, and educational content, but has limited commercial exposure value. |
| 16 | r/ender3s1 | 52% | 3.5K | 47 | An Ender 3 S1/S1 Pro/S1 Plus community discussing the Sprite extruder, CR Touch, first layers, firmware, Klipper, cables, hotends, and print reliability. It is mainly focused on troubleshooting and upgrades. With 3.5K weekly visitors and 47 contributions, visitor volume is decent but contributions are relatively low. It is suitable for researching accessories, firmware, and reliability issues for the S1 series, but is lower priority than the main Ender 3 community and the V3 series communities. |
| 17 | r/advanced_3dprinting | 50% | 1.4K | 24 | An advanced and experimental 3D printing community focused on custom G-code, non-planar printing, toolchain innovation, specialty materials, firmware, SLS, simulation, and parametric tools. The barrier to entry is clearly higher than in ordinary communities. With only 1.4K weekly visitors and 24 contributions, activity is low, but the topics are highly relevant to CAD, slicer, and additive manufacturing product teams. It is suitable for deep technical insight, not for pursuing broad exposure. |
| 18 | r/3dprintsintheshop | 48% | 1.2K | 23 | A 3D printing community for shop and workshop scenarios, covering jigs, tool storage, accessories for CNC/woodworking/metalworking/electronics shops, and functional parts. Commercial operations discussion is explicitly allowed, but mindless marketing is not welcome. With 1.2K weekly visitors and 23 contributions, activity is low, but the target audience closely matches prosumers, shop owners, and sellers of functional parts. It is suitable for uncovering opportunities around workshop tool models and small-batch products. |
| 19 | r/resinkits | 36% | 1.9K | 18 | A community for resin/plastic/vinyl/3D-printed character model kits, focused on garage kits, post-print finishing, sanding, painting, and finished-piece showcases. It is not a community for 3D modeling or printing technology discussion. With 1.9K weekly visitors and 18 contributions, activity is not high, but it has some reference value for resin figurine print services, model sellers, and painting services. It ranks low because the rules explicitly do not welcome pure 3D printing/modeling topics. |
| 20 | r/prusa | 28% | 795 | 1 | A smaller Prusa-related community discussing Prusa open-source printers, personal projects, improvements, issues, and news. In the current sample, it mainly contains scattered troubleshooting requests. With 795 weekly visitors but only 1 contribution, there is almost no stable discussion. It matches the user strategy themes, but because activity is so low, its operational value is far below r/prusa3d. |
| 21 | r/prusaindx | 24% | 31 | 9 | An unofficial small community for Prusa INDX, centered on experiences, issues, and compatibility discussions around the INDX multi-tool/multi-material system. The community is just getting started and has very little content. With 31 weekly visitors and 9 contributions, it is extremely small but highly vertical in topic. It is suitable for closely tracking early user feedback on INDX, but not yet as a primary operating base. |
| 22 | r/3dprintingideas | 22% | 127 | 18 | A very small 3D printing ideas and file-sharing community, with content including model requests, MakerWorld links, generators, and small design ideas. Overall interaction is very limited. With 127 weekly visitors and 18 contributions, it has some posting frequency, but both reach and influence are very low. It is suitable for occasionally finding inspiration for model demand, but not for major investment by brands or product teams. |
| 23 | r/functionalprintfriday | 16% | 37 | 1 | An extremely small functional print sharing community that allows users to post their own functional print content and requires designer attribution. The current sample contains only a small number of video/project posts. With 37 weekly visitors and 1 contribution, activity is almost negligible. The topic matches functional printing, but the operational and research value is very low. |
| 24 | r/ender3v3 | 5% | 76 | 0 | A community for the Ender-3 V3 series, but there were no hot-post samples in the current evaluation window. The community description is very short and signs of activity are weak. With 76 weekly visitors and 0 contributions, there is basically no usable discussion. Although the topic superficially matches Ender 3 V3, its current operational and research value is very low. |
| 25 | r/prusai3mk3 | 4% | 2 | 0 | A small community related to the Prusa i3 MK3, with no monthly post samples at present. The topic appears to be dedicated discussion of an older model. With only 2 weekly visitors and 0 contributions, it has almost no operational value. It is related to an older Prusa model, but the activity data is far too low to recommend as a research priority. |
| 26 | r/prusa3dfaq | 3% | 1 | 0 | A small FAQ community for Prusa 3D printers, with no post samples at present. It appears to be an archival or abandoned community. With 1 weekly visitor and 0 contributions, it essentially has no active users. Even though the topic is relevant, it is not suitable for research, participation, or operations. |
| 27 | r/uselessprint | 2% | 1 | 0 | A community built around the concept of “useless 3D printing,” positioned as the opposite of functional printing. There are currently no post samples. With 1 weekly visitor and 0 contributions, it has almost no activity. The topic also does not fit research needs around hardware, materials, print services, or functional printing business. |
Original About and Rules evidence
This section keeps the raw About / Rules text captured for each subreddit so operators can check the source before participating.
#1
r/3dprinting
About / Public Description
/r/3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.
Rules
Posts must be 3D-printing-related
All posts must be about a 3D printer, something that is 3D printed, or the 3D Printing industry. This is an overview. Read the full rules here: https://www.reddit.com/r/3Dprinting/wiki/communityrules/
Requests for purchase advice must go in the stickied megathread
- Don't make new threads when asking what printer to buy, they will be removed. - Instead use the Monthly Purchase Advice Thread that is stickied to the [top of the subreddit](https://old.reddit.com/r/3Dprinting/hot/) This is an overview. Read the full rules here: https://www.reddit.com/r/3Dprinting/wiki/communityrules/
Self-Promotion
Self-Promotion content can only be posted 14 days for free models and 30 days for paid models after your last self-promotion post. Specific other restrictions also apply, that you can read about in the full rules below. This is an overview. Full rules: https://www.reddit.com/r/3Dprinting/wiki/communityrules/
No Dangerous or Malicious Devices or Instructions
No Dangerous or Malicious Devices or Instructions: No posting, sharing, or linking to files or designs for dangerous devices (e.g., firearms, explosives). Non-functional cosplay or toy weapons are allowed if not resembling real firearms. Do not provide instructions to create dangerous devices. Ethical discussions are allowed, but no specific instructions. This is an overview. Full rules: https://www.reddit.com/r/3Dprinting/wiki/communityrules/
Community Behavior
People have off days. Jerks will be ignored and down-voted. But if someone is continually being disruptive to the community in multiple threads (aka trolling), they will be banned at the mods' discretion. This includes bypassing blocked links or services via for example link shorteners, which is against Reddits Terms of Service to begin with. This is an overview. Read the full rules here: https://www.reddit.com/r/3Dprinting/wiki/communityrules/
Specific Day-Limited content
We only allow memes to be posted here on mondays, as we end up with too many and they drown out all other discussions. Showing off first layers is only permitted on First Layer Friday, Spaghetti only on Spaghetti Saturday. Both of these topics get spammed way too often otherwise and are too repetitive in nature. This is an overview. Read the full rules here: https://www.reddit.com/r/3Dprinting/wiki/communityrules/
Other content restrictions
Specific other content is also restricted, for example (but not limited to): - Anything regarding cryptocurrency / NFT - AI generated content or models - Reddit ToS restricted content This is an overview. Read the full rules here: https://www.reddit.com/r/3Dprinting/wiki/communityrules/
No Karma/Repost Bots
This one is pretty obvious but we have to add it as a rule to get the applicable report reason for users so they can report Karma Bots reposting other people's content better and we can discern these posts faster.
No Linking to Restricted Websites
Do not post links to restricted websites or attempt to circumvent this restriction with partial URL strings, the use of subtle hints, etc., to reference models from these sites. For transparency, a [list of restricted sites](https://www.reddit.com/r/3Dprinting/wiki/communityrules/restrictedwebsites/) is available, explaining why these sites are restricted.
About / Public Description
A community dedicated to share and discuss 3D prints that have a specific, practical function or use in everyday life.
Rules
No Dust Collectors. (Objects that sit on a shelf and do nothing but collect dust)
No Toys/Games. (Other than modification or repair parts for existing toys/games)
No Decorative Containers, Holders, or Stands. (Vases, Boxes, Chests, etc)
No Jewelry, Ornaments, Lamps, Signs, or Lithophanes.
No Novelty Items. (Objects whose design is mainly for appearance, decoration, or humor rather than p
No Novelty Items. (Objects whose design is mainly for appearance, decoration, or humor rather than practical function) Tips/News/Questions/Announcements will be removed and expected to be posted in /r/3Dprinting.
Participate beyond your own posts
This community is not a personal showcase feed or distribution channel. Accounts that only post their own projects, videos, prints, or downloads while rarely participating in other people’s posts may have their content removed. As a rule of thumb, 10% or less of your activity should be your own content. Participate in the community beyond your own posts or your content may be removed or you may be banned. Posts may be removed at moderators discretion
#3
r/prusa3d
About / Public Description
All things related to Prusa 3D, including Printers, Prusament, and Prusa Slicer. Show off your prints, or ask a question.
Rules
Be Respectful
Treat everyone with kindness - no insults, harassment, or discrimination. Debate ideas, not people. Assume good intentions, especially with new users Do not try and ragebait
Ask for Help the Right Way
Troubleshooting requests should be posted to the megathread When posting a support question, please include (as applicable): • Printer model & firmware • Filament type & brand • Slicer and version • Print settings if changed from the defaults (temperature, speed, layer height, etc.) • Photos or videos of the issue • What you’ve tried already This will help others help you better and faster.
Share Knowledge
Share tips, print profiles, or successful prints! If you solve your own issue, post the fix so others can learn.
Be Thoughtful With What You Post
No NSFW (adult), violent, or otherwise inappropriate content. If a moderator deems that a post may result in harm to others (either directly or through inspiration), it will be removed (for example, printable functional weapons). • No discussions on politics or religion
No Spam or Unapproved Self-Promotion
Don’t post non-Prusa-related affiliate links, sales pitches, or unrelated content. No unsolicited DMs or promotions. Duplicate posts may be removed to keep a discussion in a single thread
Respect IP and Copyright
Give credit when showcasing someone else’s design or remix. Do not share paid STLs or private files without permission. Remixers: always link to the original model if available.
Respect Mods & Report Issues
Mods are here to keep things safe and organized. Follow their guidance. If you have an issue, use DMs or report - not public drama. Repeated or serious violations can result in timeouts or bans.
Have Fun, Learn, and Make Cool Stuff!
We're all learning - encourage others and celebrate the wins (big or small). Post your prints, projects, fails, and experiments - we love it all!
About / Public Description
Subreddit dedicated to creating a community around users of SLA and other resin-based 3D printing systems. Feel free to ASK questions, POST cool prints, DISCUSS hardware designs, and SHARE anything you think is relevant to resin-based printing. This is a SFW community. No NSFW ("artistic" or otherwise), no waifu, no risqué.
Rules
Be Civil
Treat all members with respect. Be constructive and helpful. Harassment, bullying and hate speech is not allowed. This includes personal attacks, toxic behavior and trolling. Violations will result in a temporary or permanent ban. See [Community Guidelines](https://www.reddit.com/r/resinprinting/wiki/index/) for further details regarding appropriate interactions.
No Extreme NSFW
This subreddit is family-friendly, and NSFW (Not Safe For Work) content is not allowed. All images, language, and discussions must remain appropriate for all audiences. Other subreddits exit for those things.
Credit the Creator
Give credits to the creator. Add their name or a link to their creator page when showcasing prints that are not your own. If you are the creator, and you are promoting your own files or shop, use the "promoting paid item/service" flair to make clear this is not just a showcase.
Relevant Content Only
Posts and discussions should directly relate to SLA printing and other resin-based 3D printing systems and its technologies only. Off-topic posts may be removed. Memes will be removed.
Self-Promotion
Self-promotion is allowed but should never be excessive. Don’t flood the subreddit with repetitive self-promotion. Moderators may remove excessive or low-value posts.
No Sharing Of Stolen Content
Do not share or post stolen STLs and links to otherwise copyrighted materials. This includes 3D models, prints, or any other resin-related content that is not properly attributed to its original creator.
No Selling Or Trading
This subreddit is not a marketplace. Do not use it to sell, offer, or trade resin printers, materials or any other related items. Violations may result in a permanent ban. If you are willing to buy used printers/hardware, we encourage you to do your due dilligence before buying anything second hand.
No Swearing
Automoderator will likely remove any posts and comments including swearing and bad language, so keep it family friendly.
Do not promote unsafe handling of resin
Promoting handling of resin in an unsafe manner. This includes advocating for unsafe handling or posts showing unsafe handling of resin
No AI
Models generated using AI are not allowed to be posted nor promoted.
#5
r/ender3
About / Public Description
Welcome to the Ender 3 community, a specialized subreddit for all users of the Ender 3 3D printer. Here, enthusiasts, hobbyists, and professionals gather to discuss, troubleshoot, and explore everything related to 3D printing with the Ender 3. Whether you're looking for guides on calibration, advice on modding, or simply want to share your latest 3D prints on the Ender 3, this subreddit is your go-to hub for support and inspiration.
Rules
Be nice.
Don't be a jerk. We try to be a helpful community, and bad behavior doesn't belong.
All posts should somehow be related to the Ender 3.
Self explanatory, make sure posts are related to the Ender 3 printer somehow. Posts not related to the Ender 3, or overly general posts will be removed. Posts like these will find more traction in more general subs, like r/3Dprinting.
Use the search function before posting if you are asking a question.
Out of respect for everyone's time, and yours use the search function so we don't answer the same question repeatedly. Nearly any question you have has already been discussed and answered thoroughly. And many guides and walkthroughs are available in the "wiki" at the top of the sub below the banner.
Don't use affiliate links without disclosure, and clear it with the moderators first.
Make sure you ask permission before using affiliate links/ paid model promotion, or they will be removed. The general guideline is no more than 10% self promotion, as in r/3Dprinting. If you post a link that has .htm? or .html? in it, please delete the question mark and everything after it. Those are tracking bits and may indicate an affiliate link.
No "illegal" posts, for example; pirated software, sharing paid models, etc.
Don't talk about pirated software, copyrighted models, etc. Discussion on attaining pirated IP will be removed in accordance with Reddit's ToS.
No posts about printer deliveries / pictures of boxes. We all own one, share your prints.
We understand that you're excited. We are excited that you're excited! However, these posts have become very spammy, and contribute nothing to discussion. They will be removed.
No "low effort" posts.
These can include: "Pls HELP!" "What am I doing wrong?" "My First Benchy/Dog/Cat" Pictures of an Ender on a desk "The quality of this machine is amazing for such a cheap printer!" posts. These are all most common things every one of these nearly 200K members of this sub have shared in/ experienced already. We're all happy for you, we've very literally all been there. So these rules exist to try to keep the sub interesting and engaging for all the members, not just the new ones.
Help posts must be detailed.
Help posts must contain settings at a minimum. This means more clarification than "chep profile" or "creawesome profile". Actual settings and values related to the issue must be shared or the post will be considered low effort, and may be removed. Rare exceptions can include large, machine based issues unrelated to a specific print.
No posts relating to functional firearms, how to obtain or construct them, or where to obtain files.
Prints regarding guns are allowed, but must be non functional props or models. No information regarding "uppers" or complete construction of a working firearm is allowed in this sub. No Files, links to files, or subs relating to gun production may be shared or posted here. No requests for models are allowed. Any requests, or shares of the model will be removed in compliance with Reddit's ToS. Basically, keep it about the print and its quality please, for this sub's continued survival.
Karma Farming/ Reposts will be removed
Reposting popular posts is not a valid form of contribution. In an effort to keep the sub interesting, and up to date, these posts will be removed.
No intentional misinformation or information purges (eg. Redact, xpunge, PowerDeleteSuite).
This forum is used for new and expert users to share, learn, and contributed to the community around the Ender3. Flooding the forum with obfuscated comments through Redact is antithetical to that mission, as comments here could be the answer to the question folks are asking. By deleting and anonymizing this information, people can't get the help the are looking for. If you believe that the community doesn't have the right to that information, then there's no need for you to engage in the sub.
#6
r/3dprinter
About / Public Description
Anything about 3d printing and 3d printers
Rules
—
About / Public Description
Help each other out! This subreddit is for people with printers who are willing to 3D print stuff out for others and send it to them, and for people who can't get a hold of a printer and want something printed! When choosing who to work with, make sure they comment BEFORE sending you a message to avoid banned and scam users.
Rules
Posts must have location tag
Posts need to have location tags. This will help those who want to make the parts understand if they are a good fit. Follow title format: '[Country] Title'. In most cases the full Country name is usable, or there iso 2 letter country codes will work. For US and Canada you can also add their state by doing [US-NY] or [CA-BC], replacing NY or BC with which state you are from Posts not following this format may be removed. Please stick to your own country unless OP requests out of country help.
Be nice to others
It's simple, don't be a dick.. Please do not make us be more specific about this. We are all adults here, act like one please!
Advertising, Spamming, "HAVE" posts
Advertising what you offer is fine, but do not spam. This community is not a fan of spam, so do it at your own risk. Only Mods can give the HAVE flair, so understand that too. It is likely better to just reply to open needs than post a HAVE thread, so do so at your own risk. Spamming is not allowed and will result in a ban, do not tempt us. But also, do not falsely report.
Karma Requirements
To prevent spam and bots, posts by users with no karma will be removed by the automod. A minimum karma of 10 is required. This keeps spam at bay. If your post was auto removed, this is likely why.
Users MUST comment before messaging
Do not trust users who do not comment. These are people that have been banned or scammers. Do not get scammed.
GUN PARTS
Gun parts are under no circumstances allowed on this subreddit. Regardless of your government rules.
About / Public Description
A positive and constructive space to share 3D prints with a function.
Rules
Must have a function
Be able to describe the unique function of the print beyond holding a non-specific thing, being pretty to look at or fun to play with (like a fidget spinner). Discussion or questions are best posted to r/3D_printing. Challenging the OP to explain the function is fine but do not argue if a print has a function in the comments.
Civility
You’re free to express your opinions and disagree but do so like adults. Personal attacks, name calling, obvious trolling and flaming are unacceptable. Keep it positive. If you can’t keep it positive, keep it constructive. If you can’t be constructive, keep it to yourself. It's possible to be critical and positive at the same time. The exception to this is humor. Crack jokes all you like but keep it in the realm of classy. If you would not tell you mother the joke, skip it.
Use The Reporting Feature
You’re not the police and you don’t enforce the rules. Use the report function if you think something is against the rules. There is no need to argue in the comments.
Concern Trolling
Concern trolling: "Disingenuously expressing concern about an issue in order to undermine, harass or derail genuine discussion." https://www.reddit.com/r/OutOfTheLoop/comments/292a5a/what_is_concern_trolling_and_why_do_people_get/ Educate people if they are making mistakes with safety, but be reasonable and be nice. Make use of the "food safe" auto response but don't spam it.
No Advertising or Self-promotion
Post that are blatantly about self-promotion are prohibited. Links to for-profit designs are not permitted. No Kickstarters. These are your designs and no one expects you to work for free. Directing people to your profile for more information is fine or send a DM. Just don't post links directly to your sale page. Explicitly asking for things like "Boosts" On Makerworld or other promotions are not allowed.
Absolutely nothing gun-related
Unless it is obviously a toy or a prop, no gun-related prints are allowed. That includes attachments, ammo boxes, crossbows and even airsoft.
No links to X/Twitter, Facebook or Instagram
No external links to the X/Twitter, Facebook or Instagram or references to follow you there will result in a warning and then a permanent ban on a second offense.
Use of AI in designs
If you used AI at all to aid in design, please be up front about it in advance. Assistance is allowed but works that are purely AI created are not allowed.
Fucking Useless Friday
On Fridays the rules are relaxed and prints with no obvious or actual function are encouraged. Show off your toys, bowls and vases or roast someone else’s useless-ass print. We’re talking roasts, not burns. Rules for civility are relaxed but still apply. Have fun but keep it classy. For clarity sake, please use the Fucking Useless Friday tag.
Rules Violations
A violation can result in a warning that may be a very short ban. Repeated violations can result in a permanent ban. Obvious harassment or trolling will be a permanent ban. If you feel that the rules were enforced unfairly, submit an appeal by replying to the notification but please be polite. Harassment will not be replied to. Ban appeals will be handled by a different mod than the one that issued the ban for fairness sake.
About / Public Description
A place to discuss all things 3D Printing related! This sub is community driven and aims to be a place to express ideas and grow together in this amazing hobby. Happy printing!
Rules
Be Kind and Courteous
Comments that are mean or insulting are not allowed. Use a civil tone even when participating in a spirited discussion. There are both experienced and new users here. Everyone should be treated kindly and with respect. If you wouldn’t make the comment to your mother, you won’t be allowed to make it here.
Language and Sexual Images / Content
This is a family-friendly group with users of all ages from around the world. Profanity is not permitted including acronyms for profanity. NSFW posts and comments are not permitted.
No Hate Speech or Bullying
There will be zero tolerance for hate speech and bullying. Degrading or sarcastic comments about race, religion, politics, culture, sexual orientation, gender, identity, or any other trait is prohibited and will lead to an immediate ban. Directly contacting any member in an abusive manner will be cause for banning.
Rules for Self-Promotional Posts
All self-promotional posts must follow these rules: a) Tag it with "Show and Tell". b) Images are required on all self promotional posts. c) No more than one post per user per week. d) Affiliate sales links are only permitted if they are approved by MODs prior to posting.
Rules for Firearms and Weapons Content
We recognize that not all laws are the same for all users of Reddit. Users may post content related to firearms and weapons given that it abide by the following criteria: a) it must not be anything that violates Reddit's content policies, b) it must not display, promote, or inherently indicate any violence, gore, or illegal activity, and c) it must not violate US law or the laws of the country from which it was posted or for which the user resides.
No Spam
No repeat posts. No spam (this includes invite links). No begging or asking. No commercial ads/posts without prior approval from the mod team.
Moderator Interaction
We need your help to make sure this community is moderated appropriately! Please contact MODs using modmail/the "Message the mods" button. Decisions on all content matters, post moderation, suspensions, and bans are final.
Low quality posts
Low quality posts/comments and low effort posts will be removed. If using AI for posts they will be removed if deemed low quality or low effort. It is encouraged to add images to posts to help increase quality.
#10
r/ender3v2
About / Public Description
A Subreddit for Ender 3 v2 users to seek help, share their creations and talk.
Rules
Positivity, Creativity, Respect
Spread good vibes through creativity and kindness. No negativity, bullying, or offensive content allowed. Embrace diverse opinions, stay civil and chill in discussions. We're a supportive community – let's chat kindly, and avoid insulting or harassing others. It's alright to disagree, just keep it friendly!
Let's Talk Prints~
Posts should be Creality Ender-3 V2 related or 3D printing-focused. While we encourage lively discussions, keep off-topic posts in check.
Play by the Rules, Protect Creative
When sharing, give a nod to the law, a high-five to intellectual property, and a secret handshake to privacy. Let's keep things groovy with an atmosphere that's all about integrity and good vibes.
Nurturing Quality Q&A
Before you fire off a question, take a spin through the search function – you might uncover what you're looking for. When you contribute, aim for the stars: provide intricate details, solution paths, and alternatives.
Bye-bye to Sales Shenanigans
Be it promoting products or wheeling and dealing, those avenues are off-limits there. Engaging in such activities might earn you a one-way ticket to the permanent ban zone. So, let's keep the vibe authentic, interactive, and free from spammy vibes!"
No NSFW🚫
We're all about creating a space that's safe for everyone. So, steer clear of any content that's not suitable for the workplace or might raise eyebrows in a general audience.
Be Brand-Wise and Stay Awesome
While brand discussions are encouraged, let's maintain a respectful tone. Avoid tearing down other brands to elevate Creality, or the opposite. Engage in insightful comparisons, always upholding a positive atmosphere.
#11
r/ender3v3se
About / Public Description
Welcome to Ender3V3SE, a community for owners and enthusiasts of the Creality Ender 3 V3 SE and KE 3D printers. This is the place to ask questions, troubleshoot issues, share print settings, show off your projects, and discuss upgrades or mods. Whether you’re new to 3D printing or an experienced maker, you’ll find support and friendly discussion here. Please note that this is an independent, unofficial subreddit and is not affiliated with Creality. Happy Printing!
Rules
Be Respectful
Treat everyone kindly. No harassment, hate speech, or personal attacks.
Stay On Topic
Posts must relate to the Ender 3 V3 SE/KE (or closely relevant 3D printing topics).
No Spam or Advertising
Avoid excessive self-promotion, affiliate/referral links, or unrelated ads.
Use Descriptive Titles
Make titles clear so members know what your post is about at a glance.
Details Required for Help
Include photos, filament type, slicer, firmware version, and other details when troubleshooting.
Flair Your Posts
Use the correct flair (Help, Showcase, Upgrades, Discussion, Guides, Firmware, Profiles, Filament).
Keep It Safe for Work
No NSFW, offensive, or inappropriate material.
No Misinformation
Share accurate information; if unsure, note that it’s opinion or personal experience.
Respect Intellectual Property
Do not share pirated files, paid STL leaks, or copyrighted content without permission.
Moderator Discretion
Mods may remove content or take action to maintain a healthy community.
#12
r/anycubicphoton
About / Public Description
Everything about the Anycubic line of resin printers! Come discuss resin printing or submit your questions here!
Rules
Bring something of real value when posting if you link to your site or ask permission.
If you feel you have something stand out of criteria then msg the mods for permission. We appreciate the work and respect people do for the community.
No Giveaways / Trades / Contests
Pretty self-explanatory. This sub isn't for selling your printed items. If you are in the printing business and happen to sell your creations, there are many other subs that allow it. The selling of used Anycubic RESIN printers is allowed by INDIVIDUALS but not businesses.
No self-promotion of your video channel
Tutorial videos and showcasing the work you have done is acceptable, but spamming your channel or videos not directly related to the Photon will be removed
Rude or harassing posts
Self-explanatory. Be nice. Everyone has an opinion, just state yours in a kind way. Constructive criticism should always be welcome.
Please read the Beginner's Resource Guide.
There is plenty of information listed in the Resource Guide.
#13
r/ender3v3ke
About / Public Description
A place to discuss the new Ender 3 V3 KE - troubleshooting, mods and more. This is not an official Creality sub.
Rules
Be nice!
Simple rule. Be nice, be patient and be understanding. Not everyone here will have experience with 3D printers, the KE model or possibly even the internet! Help and be helped, and let's make it a nice place to be.
Posts must be related to the Ender 3 V3 KE only
All posts must be related to the KE model only. For all other Ender 3 or Creality machines, see the similar communities widget for alternative subs.
No low-effort posts
If you need help, and expect some effort/help from others, put the effort in yourself FIRST. Ensure the title reflects the post, and avoid basic/short "I need help" or "What's wrong" titles. Explain what you have tried, what you have already found out/searched, what your setup is and as much information as possible.
No Aliexpress promotion
No AliExpress coupons or sales info. Violators will be permanently banned.
No buying/selling
Do not post your machines or parts for sale. There are other (better) websites for that.
Links must be manually approved
In order to protect this subreddit from malicious or fraudulent links, all comments with links are first sent to the moderators for review. Don't use shorteners.
Keep self-promotion to a minimum
Anyone constantly posting their own links/content will be banned. Some of your content might be helpful to other KE owners, but you must also be part of the community as well. There's a balance.
#14
r/3dprint
About / Public Description
3D printing
Rules
—
#15
r/ender3pro
About / Public Description
Welcome to the Creality Ender 3 Pro Community! Welcome to share your unique models, printing tips & ask for help. Have fun in the 3D world!
Rules
Positivity, Creativity, Respect
Spread good vibes through creativity and kindness. No negativity, bullying, or offensive content allowed. Embrace diverse opinions, stay civil and chill in discussions. We're a supportive community – let's chat kindly, and avoid insulting or harassing others. It's alright to disagree, just keep it friendly!
Let's Talk Prints~
Posts should be Creality-related or 3D printing-focused. While we encourage lively discussions, keep off-topic posts in check.
Play by the Rules, Protect Creative
When sharing, give a nod to the law, a high-five to intellectual property, and a secret handshake to privacy. Let's keep things groovy with an atmosphere that's all about integrity and good vibes.
Nurturing Quality Q&A
Before you fire off a question, take a spin through the search function – you might uncover what you're looking for. When you contribute, aim for the stars: provide intricate details, solution paths, and alternatives.
Bye-bye to Sales Shenanigans
Be it promoting products or wheeling and dealing, those avenues are off-limits there. Engaging in such activities might earn you a one-way ticket to the permanent ban zone. So, let's keep the vibe authentic, interactive, and free from spammy vibes!
No NSFW🚫
We're all about creating a space that's safe for everyone. So, steer clear of any content that's not suitable for the workplace or might raise eyebrows in a general audience.
Be Brand-Wise and Stay Awesome
While brand discussions are encouraged, let's maintain a respectful tone. Avoid tearing down other brands to elevate Creality, or the opposite. Engage in insightful comparisons, always upholding a positive atmosphere.
#16
r/ender3s1
About / Public Description
Community for owners of the Ender 3 S1, Ender 3 S1 Pro, and Ender 3 S1 Plus.
Rules
—
About / Public Description
Advanced 3D Printing – Beyond the Usual Layers Topics include: - Custom G-code - Experimental printing techniques and workflows - Unusual or challenging prints that test hardware, materials, or creativity - Slicer workarounds, data-driven printing, or artistic printing methods Whether you’re fine-tuning your firmware, generating toolpaths by code, or just trying something wild with your printer—this is where it belongs.
Rules
1. Stay On Topic
Posts must relate to advanced or experimental 3D printing — custom G-code, new techniques, complex or artistic prints, unconventional materials, or toolchain innovations. (Beginner questions and basic troubleshooting belong in general 3D printing subs.)
2. Show the Work
If you’re sharing a print, experiment, or project, include useful details — printer setup, materials, software, code, or process insights. The more context, the better!
3. Be Respectful & Constructive
This sub encourages exploration and creative problem-solving. Offer helpful feedback and keep discussions civil — innovation thrives in a supportive environment.
4. Credit & Transparency
Give credit where it’s due. If your post builds on someone else’s work or code, mention it clearly and link to the original source when possible.
5. Self-Promotion Is Welcome
If It Adds Value — Creators, developers, and makers are encouraged to share their own projects, tools, slicers, firmware, plugins, or content — as long as it contributes to the community. Explain what it does and why it’s useful. No spam, clickbait, or link dumps. Transparency about affiliation is required.
6. Mark Experimental or Risky Content
If your project involves hardware mods, high voltages, heat, chemicals, or other hazards, include a safety note or disclaimer.
7. Encourage Open Sharing
Whenever possible, share G-code snippets, scripts, or techniques. The goal is to push the limits of 3D printing together — not keep discoveries locked away.
About / Public Description
3d printers in the workshop, including functional prints as tools and jigs as well as using 3d printers to create components of your workshop output. The sub spans all kinds of workshops: wood and metal working, automotive, handyman, RC hobbyists, electronics, etc. Unlike some other forums we will be open to discussions about your commercial operations. No shameless marketing, but you won't be banned for talking about your commercial product if you are sharing ideas. Also, no gun stuff.
Rules
Be reasonable.
I'm not going to spell out every little rule. Basically don't be a huge dick.
Be workshop related
Your post has to relate to workshops. A light switch mod isn't shop specific because all rooms have lights. That content lives at /r/functionalprint with the tsunami of other stuff there. The point of this sub is to browse and find things specific to workshops that used to get buried in functionalprint
No 3d printing help requests
Sorry but everyone who prints has problems, and your problems are generic printing problems. Go to /r/3dprintinghelp or /r/fixmyprint
#19
r/resinkits
About / Public Description
Resin Kits is a subreddit designed to for all fans of character model kits. This includes resin, plastic, vinyl, 3D printed, you name it! Feel free to share your builds, WIPs, questions and enjoy your time here. This is not however, a pre-painted figure collector sub, please refrain from opening topics of pre-painted unofficial figures that are wrongly called "garage kits" or "resin kits".
Rules
Spam/Low effort posts
Posts like recent purchases or topics that have little to no relevance will be removed, repeated violations will result in a permanent ban on a case to case basis.
Don't be a jerk
While constructive criticism & discussions with others is one thing, we here at Resin Kits don't take kindly to anyone going out of their way to be rude to others. Doing so will resort in a perma ban, there's zero tolerance for these interactions. (Do your part to prevent harassment, report any rude links/comments to the mods)
No 3D modeling or Printing topics
While this subreddit allowed you to post pictures of your work in progress and completed pictures/media of 3D printed figures, this sub is NOT a 3D modeling or 3D printing sub, please refrain from posting WIPs or screenshots of your 3D modeling projects, unless you have already printed it and you're actively working on it, keep your 3D modeling and printing topics outside this sub.
Must be related to model kits
As stated in our motto, not just anime garage kits but video game, superhero, horror classics, & all kinds of character model posts are welcome here! If you are looking for other kinds of models, please check out /r/modelmakers. ALL kinds of model kits allowed, not only resin but vinyl, plastic, and 3D printed. This is a modeling community, this is not a collector community for those that purchase prepainted figures, please refrain from opening topics not related to kit building and painting.
No Pre-Painted statues discussions
This is a modeling community, not a collector sub of prepainted figures of Asian companies overseas, figures that are wrongly called "garage kits" or "resin kits" by studios that sell unofficial and unlicensed statues of mostly Shonen Jump series like Dragon Ball, Bleach, Naruto, etc. Those are prepainted status/figures and don't belong here.
Recasts
While we are aware that some users might not be a fan of this topic, they're the only thing keeping a lot of rare kits in circulation and hobbyists afloat, so we're okay with talking about/buying/building recasts. Bullying about this issue is not allowed, if you do not agree with the item be kind and scroll past.
Please mark all NSFW content
NSFW (not safe for work) content is allowed, but please mark your post as so. No pornographic/adult kits but nudity, gore is allowed. NSFW kits are those that show nipples, genitalia, sex toys, see Pinned post for the complete guideline.
Commissions
Commissions (requested or offering) are allowed in this sub but the person offering commissions will need to contact the mods to be vetted and approved to offer services in comments or threads. No unauthorized commissioners will be permitted to post to offer services, they can and will be banned for repeated violations.
Sales
Private sales are ok in this sub, but do not come here to promote or advertise your business website, page or other social media sites.
No crossposting
Self explanatory, don't crosspost. Anybody that is breaks this rule and doesn't have prior sub participation will be automatically banned.
#20
r/prusa
About / Public Description
/r/prusa is a place for people to discuss the open source Prusa 3d printer design. Post anything that relates to these 3d printers, personal projects, new designs, improvements, questions, news or anything that relates to the main topic.
Rules
Posts must be 3D-printing-related
All posts must be about a 3D printer or something that is 3D printed or the 3D Printing industry.
Less than 10% of your posts/comments may be promoting your personal business or work
We help enforce Reddit's sitewide self promotion rules https://www.reddit.com/wiki/selfpromotion. Reddit is for people, not businesses. If you wish to showcase your work here you must engage with the community as a member of it, by helping others and discussing other people's posts. You must keep self-content to less than 10% of your overall content - when posting self-content be prepared to engage with the community, answer questions, and hear out criticisms.
Don't be a turd hat.
This is a community for you and your peers to share and enjoy the wonderful and exciting hobby of 3D printing. Show these people that you care for and respect their ideas and decisions. Inflammatory and rude language isn't going to be tolerated and will result in a ban.
#21
r/prusaindx
About / Public Description
Inofficial prusa indx 3D printer forum.
Rules
Respect others and be civil
No harassment, hate speech, or toxic behavior. Treat all contributors and members with kindness.
No spam
Excessive promotion, spam, or advertising of any kind is not allowed.
About / Public Description
Discover and share your favourite 3d printing ideas and files.
Rules
—
About / Public Description
Welcome to r/functionalprintfriday! We welcome all kinds of posts, links, etc. Linking to your own content is fine, but credit the designer if you're using someone else's design. You can post any day of the week, but Friday's are where it's at :)
Rules
Content
Content you post must be a functional print. No toys or useless objects. Linking to your own content is fine, but give credit where credit is due. If it's someone else's design, please mention them.
#24
r/ender3v3
About / Public Description
Ender-3 V3 Series Community
Rules
—
#25
r/prusai3mk3
About / Public Description
Original Prusa i3 MK3 3D Printer - description
Rules
—
#26
r/prusa3dfaq
About / Public Description
FAQ for prusa 3d printers
Rules
—
#27
r/uselessprint
About / Public Description
The same as r/functionalprint except the opposite. Show off all your useless and cool prints here.
Rules
—
How to turn this into a weekly workflow
Tag saved posts by machine, material, slicer, model source, calibration issue, and intended part function.
Separate setup questions from long-term reliability reports and finished-part evidence.
Use repeated failure language to improve documentation, onboarding, troubleshooting, and product-page claims.
Check promotion, survey, model attribution, marketplace, and safety rules before posting.
FAQ
Which 3D printing subreddit should a new team read first?
Start with r/3Dprinting for breadth, then move to r/functionalprint, r/prusa3d, r/resinprinting, or r/ender3 when the product and workflow call for a narrower audience.
Can a printer or filament brand promote products in these communities?
Do not assume so. Read each community's rules, disclose commercial affiliation, and favor specific technical help over links or generic promotion.
What should product teams extract from Reddit threads?
Track failed prints, calibration, material behavior, slicer and model workflows, troubleshooting patterns, and the evidence users provide when recommending a printer.