3D printing questions split between general maker discussion and failed-print troubleshooting. r/3Dprinting covers printers, printed parts and the industry, but buying advice must go in its stickied purchase megathread. r/FixMyPrint focuses on fixing printer settings when a print fails.
Where to ask
Best for: General 3D-printing discussion, projects and industry topics — not standalone “what printer should I buy?” threads.
Why it fits: Its 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.”
Members in our directory: 3.5M
Rules to know before posting:
- Posts must be about a 3D printer, something 3D printed, or the 3D-printing industry.
- Purchase-advice requests must go in the stickied megathread — new “what should I buy?” threads are removed.
- Keep self-promotion under Reddit’s limits (roughly under 10% of your activity).
- No dangerous or malicious device files or instructions (for example firearms or explosives designs).
- Memes only on Monday; first-layer posts on Friday and spaghetti posts on Saturday unless the post is otherwise troubleshooting-focused.
- No karma/repost bots; do not link restricted model sites or try to dodge that ban.
Read r/3Dprinting’s current rules on Reddit
Best for: Diagnosing a failed or low-quality print when you can share printer and slicer settings.
Why it fits: Its public description: “The community of r/FixMyPrint will help you fix your 3D printer settings for the most optimal prints.”
Rules to know before posting:
- No harassment or trolling.
- Post printer settings when asking for help — model, slicer, filament, temperatures and related settings.
- Posts must be about fixing a 3D printer or print result.
- Reposts are allowed if an earlier thread stayed unsolved; memes are not.
- Respond to people who try to help — ignored help threads may be removed.
Read r/FixMyPrint’s current rules on Reddit
Before you post
- For “which printer should I buy?”, use the stickied purchase thread in r/3Dprinting instead of a new post.
- When a print fails, include photos plus nozzle/bed temps, speeds and material — FixMyPrint expects settings up front.
- 3D modeling software questions are a different skill path from printer-settings troubleshooting.
Related on SubMouse
Rule summaries are paraphrased from each community’s published rules (public archive copy retrieved 7 November 2026; original snapshot date unavailable). Current rules may differ — check the community’s rules before posting. A good fit does not guarantee a reply.