Show HN: Vibe Code your 3D Models

I have a suggestion, a major part of 3D modelling that many can struggle with is actually UV mapping. It can take a bit of time to do to get it right and if it could be done decently with one click with better results than with Blender or paid applications like Rizom. They'd probably be a decent market out there.

I use OpenSCAD with Claude Code and it's pretty impressive. In practice the flow of letting the machine just spend its time iterating on the design with PNGs that it rotates and renders before it actually gives me an STL works quite well.

e.g. https://wiki.roshangeorge.dev/w/Blog/2026-01-11/Modeling_Wit...

These are fun but as long as it’s OpenSCAD it will always be a hobbyist toy and not able to be used for professional use. Which is fine! But imo an openscad rendering pipeline is pretty easy. I’m more interested in someone trying to take a stab at vibe coding models that output Brep compatible formats and generate STEP files. This is much, much harder to do but is the main step towards doing this for actual professional use cases.

Presumably someone is getting closer to this, curious who the most robust player in that space is.

Also curious if building an actual kernel replacement for open cascade is on the table now with AI, it’s a very tough thing to do but now it seems somewhat tractable in 2026

CAD modeling seems to be safe from automation for the time being. I've tried various services and ones like sloyd.ai can't even take a simple svg and plop it onto a rectangle base.

And here I thought the CS dept in my school were the elite ones since they brought in the most money and sponsorships. Turns out my fellow Mech Eng classmates will have the last laugh.

Having played around with this a bit, I recommend using https://github.com/CadQuery/cadquery as the CAD language instead. I'm pretty sure it could even transpile to OnShape / Solidworks models as well, though it might require some funky hacks with their extensions frameworks

csgrs author here. Congratulations on this release! Please swing by the csgrs discord or let me know where to join you for future discussions related to SynapsCAD. I'd love to chat about future developments. Amazing work!

I use openscad vibe coding quite a bit. It tends to fall down beyond extremely simple examples, though. Error categories I've encountered if you want to build better rails: (1) forgetting axis orientations after multiple layers of rotate() (2) center=true presence ignored resulting in mistaken geometry (3) inconsistent naming (4) insufficiently verbose naming (5) 3D printing tolerances (6) lack of validation (7) shared faces causing rendering issues

I would suggest that every stage has the following basic checks: (A) If it's a 'substract' type operation, ensure the resulting shape has less volume than the original shape (B) Ensure no 'subtract' results in zero volume shape (C) Ensure no 'shared faces' exist (D) Ensure output is consistent with requisite axes (eg. render an elevation in orthographic and know which way is up/down in profile so that relative terms can be quantitatively verified in the rendering) (E) Name everything with a semantic tree that is updated properly instead of hacked upon until it becomes illogical and incoherent

This would go a huge way to fixing the main issues encountered so far.

I've had mixed results just giving a prompt to ChatGPT, etc, which usually uses CadQuery and produces an STL as an artifact.

If it’s GPL then you must care about “free software”. If that is the case, you should reconsider hosting on a fully-proprietary code forge. It requires cognitive dissonance to thing FLOSS is the right license for your project but not for your tooling/community.