STL · OBJ · GLB
Free Online STL Repair
Fix non-manifold edges, holes and broken meshes — get a watertight file your slicer will accept. Diagnosis is always free, and your file never leaves your device.
Mesh repair — diagnose · fix · downloadNO UPLOAD · RUNS LOCALLY
Drop a broken model — repair report in seconds
.stl .obj .glb .gltf — free, no signup, parsed in your browser
✗
FAILS SLICER CHECK
40,836 open edges · 166 loose shells · not watertight
See it on a real AI-generated model
This treasure chest came out of an AI image-to-3D generator looking flawless — and carrying 40,836 open edges and 166 floating shells. Toggle the tabs: same model, before and after deep repair. Rotate it yourself.
Your file gets the same treatment: drop it above, read the free diagnosis, and only pay if you want the full rebuild.
Why AI-generated models fail to print
- COMMONOpen edges & holes. Roughly half of AI-generated models (Meshy, Tripo, Hunyuan) have gaps the slicer can't close. We rebuild small holes into a sealed surface automatically.
- COMMONFloating debris. Generators often leave stray fragments scattered around the main body — we detect and remove tiny disconnected shells.
- HONESTWhat free repair can't do: large or complex holes need a full surface rebuild (Pro) to guarantee a watertight result. We tell you which case you're in — no silent failures.
- ANY SOURCENot tied to one generator. Even output labeled "print-ready" can fail a slicer check. Drop in any STL, OBJ or GLB — from this tool, another AI generator, or a 3D scan — and we'll diagnose it the same way.
Diagnosis & basic repairFree
Deep repair (keeps colors)20 credits
Image to 3D generation30 credits
100 credits$9.90
All plans →