3DCraft
3DCraft is an open-source parametric 3D CAD modeller built with and for AI: every action is a command, and every result is checked.
An agent builds. A machine checks. You decide.
3dcraft.dev: the website, with the guide and the examples ·
Try it in your browser ·
Download
Three ways to use it
- Make models with AI. Describe a part to an AI agent. It builds the part in the window you are watching,
step by step; you point at a face, ask for a change, and check the result. Then export it for a 3D printer,
a laser cutter, a mill or a workshop.
- Use a Jig. A Jig is a finished design with a form: the sizes that matter are fields, the rest follows
by formulas, and every result is checked. Take the sundial: choose your place, say whether it lies in the
garden or hangs on a wall and which way that wall faces, and you get a brass dial to laser cut and engrave
that reads the clock time where you live. No AI needed.
- Build your own application on it. The engine is a Rust library, and every command is also reachable
from the command line, a JSON control channel and an MCP server. A gear generator, a furniture
configurator, a CAD interface with buttons: each can be a separate program on top of 3DCraft. The licence
is MIT.
3DCraft has no toolbar of modelling buttons. You model through commands: an agent sends them, a Jig's form
sends them, or you write them yourself. The window is there to watch, to point and to check. Whoever wants a
classic interface with buttons can build one on top: it would send the same commands.
It is written in pure Rust, with its own B-rep kernel, constraint solver, tessellator and renderers: no
OpenCascade, no Parasolid, no third-party geometry of any kind. Licence: MIT.
How it started
3DCraft started as an experiment. The occasion was practical: designing a CNC machine, furniture and the
bodies and mechanisms of marionettes, with open software and the help of an AI agent. The open tools of today
did not get there. So the question was turned around: can AI agents write a CAD kernel themselves, if a
machine checks every result?
3DCraft is the answer so far, and it was built the way it works. AI agents wrote it, under tests a machine can
check, while the developer watched. An agent models in it the same way: through commands, under checks, in a
window you are watching. The project is the proof of its own method.
Where it stands
3DCraft is at version 0.1.1. It does not replace professional CAD today. What it cannot do yet, it refuses,
and says so. The experiment goes on: the kernel is its heart and its hardest part, every refusal is work still
owed, and it is being made better step by step.
Get started
0.1.1 is the current release: the first release, 0.1.0, with a fix for Windows. Its installers are on
the releases page, and the website,
3dcraft.dev, has the guide, the examples and the web version.
- Install 3DCraft: installers for Windows, macOS and Linux (version
0.1.1), or the web version with nothing to install.
- Your first five minutes: open an example, play its history, try a
Jig, export for a 3D printer.
- The user guide, 22 chapters in six parts: installing and connecting an AI
agent, working with one, the window, Jigs, assemblies and files; modelling, sheet metal, surfaces and
origami; measuring and engineering checks; making Jigs, the command line and programs on 3DCraft;
troubleshooting and a reference of every command.
- The guide's lessons, seven parts that check their own volume, and three
collections: finished parts, the
Jigs collection (from a laser-cut box and a GT2 pulley
to a planetary gearbox and a sundial for your place) and
assemblies, all in the website's
galleries.
- What changed:
CHANGELOG.md.
This is the beginning of the README. Read the rest at the original. Read the full README ↗
