How to Promote Printable and Etsy Products on Reddit in Fan Communities

Targeting the right fan communities on Reddit can drive both engagement and sales when done authentically. Here’s how one creator used 3D printing and cosplay subreddits to promote his printable armor designs.

Algorithm:

1. The creator designs historically accurate 16th century German armor and prints it in pieces using common 3D printer dimensions so others can easily recreate it.
2. He posts high-quality photos and videos of the armor in action to relevant subreddits such as r/3Dprinting (for the makers) and r/cosplayers (for the cosplay crowd).
3. Post titles are clear and descriptive - “I’m adding accessories to my 3D printed suit of armor!” or “Historically Accurate 16th Century Knight (Entirely 3D printed!)” - sparking curiosity in both audiences.
4. In the comments, he engages with questions about the design, materials, and process, and includes links to his Etsy and Printables shop where people can buy the STL files and instructions.
5. By showcasing progress (e.g., adding accessories, updating with new photos), he keeps the community invested and gives new reasons to revisit the posts.

Why It Works:

• Content is visually striking and relevant to both maker and fan audiences.
• Posting in multiple subreddits reaches different but overlapping communities - creators, buyers, and enthusiasts.
• The promotional element (Etsy/Printables links) is placed in comments, aligning with subreddit self-promo rules.

How to Scale This:

• Expand to other related communities like r/LARP or r/DIYCostumes.
• Create themed or seasonal variations of the design to post as fresh content.
• Share short “making-of” clips to tap into process-oriented subreddits.
• Bundle designs into themed sets to upsell to engaged buyers.

Related Ideas:

• Miniature designers posting painted figures in tabletop gaming subs, linking to STL files.
• Prop makers sharing film replica builds in movie fan subs.
• Home décor 3D modelers posting in niche décor or maker subs.

This Is How It Looks Like

What users say

• “Hell yeah! I’m printing this out of PETG and PETG-CF…”
• “Where can I get the files? This is amazing work.”

By combining great visuals, targeted community posting, and genuine engagement, the creator not only inspired fellow makers but also funneled interested buyers to his Etsy and Printables stores.

Final Notes

• Lead with value - show your work, process, and results.
• Choose subreddits where your product is both relevant and admired.
• Use the comments to handle promotion, keeping the post itself focused on the community’s interests.