100% to creators
Sellers keep 100% of every sale. Buyers pay a small flat fee — no percentage taken from your revenue ever.
20+ languages
Browse and sell in your language. Proofly is fully translated into 20+ languages for a global audience.
HiddenMark™ piracy tracing
Every paid download is fingerprinted. If your file leaks, you know exactly which buyer shared it.
5 things Ko-fi and Gumroad can't do
Proofly is purpose-built for selling 3D models — not an afterthought bolted onto a tip-jar platform.
In-browser 3D viewer
Buyers rotate, zoom and inspect your mesh before purchasing. No download required. Ko-fi and Gumroad show only flat images.
HiddenMark™ piracy protection
Every download carries an invisible mesh watermark. If your STL leaks, you trace the exact buyer in seconds. No other 3D marketplace offers this.
Format filters for buyers
Buyers can filter by STL, 3MF, OBJ, GLB, STEP or ZIP. Your files reach the right buyer — printable, CAD or game-ready — without extra explanation.
Print settings per listing
Attach layer height, material, infill density, supports and printer model to every file. Buyers get the technical context they need — no back-and-forth DMs.
AI topology check
Automatic non-manifold and watertight mesh analysis on upload. Catch issues before buyers do — and prove print-readiness with a single badge.
Blocky Coin Bank – 3D Printable Piggy Bank with Removable Bottom (STL)
This Blocky Coin Bank is a fun and functional 3D-printable piggy bank with a clean, block-style design. It features a coin slot on top and a removable bottom l
Combat Knife – Tactical Fixed Blade Knife Model (STL)
This Combat Knife STL features a realistic fixed-blade design inspired by tactical and survival knives. The model is suitable for display, prop-making, cosplay
Curated picks
Handpicked collections for every workflow
Game-ready assets
GLB & FBX models ready for Unity, Unreal Engine and Blender workflows. Low poly, PBR, and rigged characters.
Top STL for printing
Best-selling STL files optimized for FDM and resin printing. Detailed miniatures, functional prints, and decorative pieces.
Fantasy & miniatures
Tabletop RPG miniatures, D&D terrain, fantasy creatures and epic dioramas. Perfect for resin printing.
Built for 3D creators
Everything Ko-fi and Gumroad lack — in one platform built from the ground up for 3D printing.
In-browser 3D viewer
Buyers inspect every mesh before buying. No blind downloads, higher conversion.
HiddenMark™ protection
Every download is fingerprinted. Leaks are traceable to the exact buyer.
Any 3D format
STL, GLB, OBJ, 3MF, FBX, ZIP — all natively supported and viewable.
Print settings included
Upload layer height, infill %, supports, and material spec. Buyers print right the first time.
AI topology check
Instant mesh analysis on upload: polycount, watertight status, printability warnings — no slicer needed.