Show HN: SolidCraft – Open-Source Parametric CAD in Rust (With MCP Support)
SolidCraft is a new open-source parametric 3D CAD application built in Rust that supports AI-driven modeling via MCP. It allows users to design solids with a feature timeline and is currently in an early, usable state.
Why it matters
It represents a shift toward open-source, AI-integrated engineering tools that could lower the barrier to entry for parametric design.
An open-source parametric 3D CAD application built in pure Rust.
Sketch, constrain, and build solids with a parametric feature timeline. Change a dimension and watch your model rebuild. Run it on your desktop, in your browser, or let AI agents model through the built-in MCP server.
A Raspberry Pi 4 case from an empty design: a sketch dimensioned with the board's parameters, extrude, fillet, shell, an M2.5 standoff patterned on the 58 × 49 mm hole rectangle, port cut-outs, vent slots and a colour, then height 24 → 32 mm in Parameters and it all rebuilds. 6× playback. Full video , recorded with the demo script .
The downloads aren't signed yet. On Windows, if SmartScreen warns you, choose More info , then Run anyway . On macOS, the first time, right-click SolidCraft in Applications and choose Open .
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