Can I advertise a 3D scanner in r/3dscanning?
Advertising is limited. An advertisement or sale post must at minimum include an image of a unique scan made with the associated device so the post offers educational value.
Subreddit guides
r/3DScanning rules, stats, and what to post
A source-backed Rankhog guide to r/3DScanning: public rules, community context, posting fit, and advertising limits 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
- Members
- 50,264
- Verified
- August 13, 2026
- Category
- 3D scanning practitioners and enthusiasts
Rules can change, so Rankhog keeps verification dates and the original public Reddit sources visible.
Rule summary
- Be kind and respectful: Harassment, hate speech, and personal attacks are not allowed.
- Limited advertising: Advertisements and sale posts must, at minimum, include an image of a unique scan made with the associated device so the post provides educational value.
- Stay on topic: Posts must be relevant to 3D scanning.
- No malicious content: Do not post malware or unsafe links. Manufacturers must not blatantly promote themselves by disparaging another manufacturer.
- Respect privacy: Do not post personal information or images of other people without their consent.
Works well
- The old sidebar explicitly invites 3D-scanning news, tutorials, examples, personal projects, discussions, and questions.
- The current description welcomes insights, questions, and updates about trends and innovations in 3D scanning.
- Detailed criticism of a specific scanner model or app is allowed when the post explains and supports the assertion.
- An advertisement or sale post can meet the minimum advertising rule by including an image of a unique scan made with the associated device for educational value.
- As a practical recommendation, include the device, subject, and relevant scan details when they help members understand an example or question.
Avoid
- Blanket criticism of a company or its products without supporting details; the public description says it will be deleted and can lead from a three-day ban to a permanent ban for repeat behavior.
- Advertisements or sale posts that do not include the required image of a unique scan made with the associated device.
- Malware, unsafe links, or manufacturer promotion that disparages another manufacturer.
- Personal information or images of other people posted without consent.
- Unnecessary blog spam, outsourcing advertisements, off-topic posts, harassment, hate speech, and personal attacks.
What r/3dscanning Is For
The current description presents r/3DScanning as a place to share insights, ask questions, and follow trends and innovations in 3D scanning. The old sidebar also invites news, tutorials, examples, personal projects, discussions, and questions. A shorter public description summarizes the range as scanning small objects through large structures.
Rules That Matter Before Posting
Posts must stay relevant to 3D scanning and remain kind and respectful. Harassment, hate speech, personal attacks, malware, and unsafe links are prohibited. The privacy rule also prohibits personal information or images of other people without consent.
Advertising is limited rather than categorically prohibited: an advertisement or sale post must at minimum include an image of a unique scan made with the associated device so it provides educational value. The sidebar separately prohibits unnecessary blog spam and outsourcing advertisements.
Detailed criticism of a specific scanner model or app is allowed when the assertion is explained. Unsupported blanket criticism of a company or its products will be deleted; the public description says the first offense brings a three-day ban and repeat behavior can bring a permanent ban. Manufacturers must not promote themselves by disparaging another manufacturer.
What To Post
The source-backed fits include news, tutorials, examples, personal projects, insights, questions, discussions, and updates on scanning trends or innovations. As a practical recommendation, add the device, subject, and relevant scan details when that context helps members understand the result or answer the question.
What To Avoid
Avoid unsupported blanket criticism, malicious links, privacy violations, unnecessary blog spam, outsourcing advertisements, and manufacturer shilling. If a post is an advertisement or sale listing, include the unique scan image required by the formal rule.
Rankhog Notes
Check advertising, evidence, and privacy before publishing. Related technical guides cover r/photogrammetry, r/lidar, and r/bim.
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Common questions about r/3DScanning
Can I criticize a scanner or app?
Yes, when the criticism addresses a specific model or app and includes details supporting the assertion. The public description says unsupported blanket criticism will be deleted and can lead from a three-day ban to a permanent ban for repeat behavior.
What belongs in r/3dscanning?
The old sidebar invites news, tutorials, examples, personal projects, discussions, and questions about 3D scanning.
Can I post a scan containing another person?
Only with that person's consent. The privacy rule prohibits posting images of others, or their personal information, without consent.
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