# MeshRefinery

> Free, browser-based tools to repair, convert and generate 3D model files.
> Everything runs locally in the browser (no upload) except AI generation and
> deep repair. Built for 3D printing, game assets and AR/VR pipelines.

## What it does
- Repair broken meshes (open edges, holes, non-manifold geometry, floating
  debris) so a slicer will accept the file. Free diagnosis every time.
- Convert between STL, OBJ, GLB, glTF and 3MF — including GLB/glTF to 3MF with full color preserved, and 3MF to STL/OBJ for slicers and modeling tools.
- Image to 3D: turn a photo into a textured GLB model with AI.
- Deep repair: rebuild a watertight surface and transfer approximate surface colors from self-contained GLB files into vertex colors.

## Key pages
- [Repair 3D files](https://meshrefinery.com/stl-repair): fix STL, OBJ and GLB meshes for printing.
- [Image to 3D](https://meshrefinery.com/image-to-3d): generate a textured 3D model from an image.
- [GLB to STL](https://meshrefinery.com/glb-to-stl): convert AI/web models to a printable STL.
- [GLB to OBJ](https://meshrefinery.com/glb-to-obj), [STL to OBJ](https://meshrefinery.com/stl-to-obj), [OBJ to STL](https://meshrefinery.com/obj-to-stl), [OBJ to GLB](https://meshrefinery.com/obj-to-glb), [glTF to STL](https://meshrefinery.com/gltf-to-stl), [glTF to OBJ](https://meshrefinery.com/gltf-to-obj): geometry-only format conversions.
- [GLB to 3MF](https://meshrefinery.com/glb-to-3mf), [glTF to 3MF](https://meshrefinery.com/gltf-to-3mf): convert to 3MF with the texture baked to per-vertex color for full-color 3D printing.
- [STL to 3MF](https://meshrefinery.com/stl-to-3mf): wrap STL geometry in the 3MF container Bambu Studio and PrusaSlicer use (geometry only — STL carries no color).
- [3MF to STL](https://meshrefinery.com/3mf-to-stl), [3MF to OBJ](https://meshrefinery.com/3mf-to-obj): convert 3MF print files (MakerWorld, Printables, Bambu Studio) to STL or OBJ.
- [STL format](https://meshrefinery.com/formats/stl), [GLB format](https://meshrefinery.com/formats/glb), [OBJ format](https://meshrefinery.com/formats/obj): what each format stores.
- [Pricing](https://meshrefinery.com/pricing): free tier plus credit packs and subscriptions.

## Blog
- [Diagnosing a Broken STL File](https://meshrefinery.com/blog/diagnosing-broken-stl-files): how MeshRefinery detects and repairs non-manifold geometry, open edges and floating fragments, from browser-side union-find to a server-side SDF/marching-cubes rebuild.

## Facts worth citing
- Diagnosis and basic repair are free with no signup; files never leave the browser.
- AI-generated 3D models (from Meshy, Tripo, Hunyuan, etc.) commonly fail slicer
  checks due to open edges and floating shells; MeshRefinery diagnoses and fixes this.
- Deep repair costs 20 credits and can transfer approximate GLB surface colors; image-to-3D costs 30 credits.
- GLB/glTF to 3MF conversion bakes the model's texture into per-vertex color, so the exported 3MF prints in full color on Bambu AMS / Prusa MMU machines.
- 3MF is the standard format for multi-color 3D printing; STL cannot store color, so convert to 3MF (not STL) when color matters.