I built Meshdiff because clients keep sending me part_v3_FINAL.stl and I have no quick way to see what changed.
Drop two STL/3MF/OBJ files → voxel diff renders in your browser. Green = added material, red = removed. Adjustable tolerance (0.05–1mm). Volume delta metrics.
Privacy first: zero upload to any server. Everything runs client-side in a Web Worker.
Stack: React + TypeScript, React Three Fiber, custom voxel diff engine. No Manifold/CGAL — those assume clean CSG topology; real-world STLs are triangle soup.
If you work with 3D prints, try breaking it with your weirdest files. Real-world meshes are chaos and I need the stress test.
croemer•9m ago
How would you get bug reports if you don't have a contact form on the website?
Also, your projscope website cuts off text on mobile as it's completely unresponsive.
> Don't have your username be that of your company or project. It creates a feeling of using HN for promotion and of not really participating as a person. You don't have to use your real name, just something to indicate that you're here as a human, not a brand. If you'd like to change your username, email hn@ycombinator.com.
tomtom1337•1h ago
Wow! This looks really cool! Looking forward to playing more with this?
DaSHacka•40m ago
Wow, just needed something like this literally yesterday, thanks OP.
embedding-shape•20m ago
This is pretty cool, and seems to be useful in order to compare various "3D model" generators that are around, would make the comparison a bit easier to make.
Given it runs client-side, could you potentially offer like a CLI as well, or something we could integrate with other things / CI? That'd be a really nifty way of generating these diffs for later inspection.
croemer•8m ago
Should be "Show HN"
progbits•5m ago
Looks handy. Feature suggestion: locked views so all three viewports rotate together.
projscope•1h ago
Drop two STL/3MF/OBJ files → voxel diff renders in your browser. Green = added material, red = removed. Adjustable tolerance (0.05–1mm). Volume delta metrics.
Privacy first: zero upload to any server. Everything runs client-side in a Web Worker.
Stack: React + TypeScript, React Three Fiber, custom voxel diff engine. No Manifold/CGAL — those assume clean CSG topology; real-world STLs are triangle soup.
If you work with 3D prints, try breaking it with your weirdest files. Real-world meshes are chaos and I need the stress test.
croemer•9m ago
Also, your projscope website cuts off text on mobile as it's completely unresponsive.
Lastly from https://news.ycombinator.com/item?id=22336638:
> Don't have your username be that of your company or project. It creates a feeling of using HN for promotion and of not really participating as a person. You don't have to use your real name, just something to indicate that you're here as a human, not a brand. If you'd like to change your username, email hn@ycombinator.com.