A source-backed Rankhog guide to r/prusa3d: public rules, community context, posting fit, and startup-promotion risk before you publish.
By Anthony Riera, founder and operator of Rankhog.
Subreddit guides combine public Reddit source URLs, captured rules, visible verification dates, and Rankhog's account-safety workflow.
Current public stats
Rules can change, so Rankhog keeps verification dates and the original public Reddit sources visible.
This is the home for everything around Prusa 3D printing. People post about Prusa printers, Prusament filament, and Prusa Slicer. The community invites you to show off your prints or ask a question, and the rules push in the same direction. They want tips, print profiles, successful prints, projects, fails, and experiments. The people here are Prusa owners and people learning to print, from brand new users to experienced makers. It is a maker community first, so anything you bring has to be useful to someone holding a spool of filament.
Three rules decide most outcomes here. “Ask for Help the Right Way” sends troubleshooting to the megathread, so a support-style post about your product or a user question has to follow that format or it gets pulled. “No Spam or Unapproved Self-Promotion” is the big one for marketers, because it bans non-Prusa-related affiliate links, sales pitches, and unsolicited promotions, and it also warns that duplicate posts may be removed to keep discussion in one thread. “Respect IP and Copyright” matters if you share designs, since you must credit the original creator, link to the original model for remixes, and never share paid STLs or private files without permission. Behind those sit “Be Respectful”, which bans insults and ragebait, and “Be Thoughtful With What You Post”, which bans unsafe content and any politics or religion talk.
Lead with something the rules explicitly welcome. A solved problem with the fix written out fits “Share Knowledge” perfectly, and it is the most natural way a founder can be useful here without pitching. A print profile you tuned for a Prusa printer, a tip that saved someone a failed print, or a project built on a Prusa machine all fit. If you show off a print or a remix, credit the designer and link the original model. If your product is relevant, mention it honestly inside a genuinely helpful post, keep it Prusa related, and never send unsolicited DMs offering it. Save any support questions for the megathread and include the printer model, firmware, filament, slicer version, settings, photos, and what you already tried.
The fastest way out is a sales pitch or an affiliate link that is not Prusa related, because “No Spam or Unapproved Self-Promotion” covers that directly. Unsolicited DMs and promotions are banned too, so do not slide into anyone's messages. Do not post troubleshooting as a standalone thread, because “Ask for Help the Right Way” sends those to the megathread. Do not share paid STLs or private files without permission, and never post a remix without crediting the original designer and linking the original model. Keep content clean of NSFW, violent, or otherwise inappropriate material, skip politics and religion entirely, and do not try to ragebait or insult anyone. If a moderator tells you something, follow their guidance and take disputes to DMs or reports instead of public drama.
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Only if it is genuinely Prusa-related and you have approval. Rule 5, “No Spam or Unapproved Self-Promotion”, bans sales pitches and unapproved promotion, so ask the moderators first and lead with value either way.
Yes, if the content is about Prusa printers, Prusament, or Prusa Slicer. Non-Prusa affiliate links are not allowed under rule 5.
No. Rule 2, “Ask for Help the Right Way”, sends troubleshooting to the megathread. If you later solve the issue, sharing the fix as a knowledge post fits rule 3.
Yes, if you made it and it is safe and appropriate. Rule 6, “Respect IP and Copyright”, only requires credit and original links when the design is someone else's.
Rule 4, “Be Thoughtful With What You Post”, bans NSFW, violent, or otherwise inappropriate content, and moderators remove posts that could enable harm, like printable functional weapons.
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