Testing SolidCraft

I've been testing SolidCraft, the open-source parametric CAD package written in Rust. If you missed the story, it's a clean-room reimplementation of Fusion 360 that got attention for how much of it was built with AI coding agents. It's free, and it runs as a native app, in the browser, or headless from the command line.

That screenshot is a real job, not a demo file: the vented case and test jig for one of my ideal diode boards, with the full PCB model dropped in. 101 bodies and it doesn't break a sweat.

The short version: it already has most of the features of the basic parts of Fusion 360. Sketches, constraints, the feature timeline, the day-to-day modelling workflow you'd actually use for enclosures and brackets. If your Fusion usage looks like mine, mostly solid modelling with the occasional export for the printer or the CNC, there isn't much missing.

It's also fast. Not "fine for an open-source project" fast, but genuinely quick on every OS I've tried it on. Coming from Fusion's login screens and loading spinners, opening a file and just working is a nice change.

The community around it is the other surprise. It's small but really pleasant, and things move quickly.

Early days, but I can see this becoming my default 3D modelling and CAD software.