PDM
Local-first versioning
Every check-in is a row in SQLite. WAL on disk, checkout on the feature tree, release states without an account. Path: .cad_workspace/*.cad_db
- r16HEAD fillet R4checked out
- r15hole Ø6.8
- r14extrude 8 mm
- r13sketch locked
Desktop kernel · open source
Parametric CAD.
Native ECAD.
Zero cloud.
A local suite for parts, boards, and toolpaths. History lives in SQLite. Solids live in OpenCASCADE. The STEP file never phones home.
Loading viewport
Drag height, bore, and across-flats. Switch Sketch / Solid / Trace / Path.
On the machine
Four systems.
One document tree.
Part studios, assemblies, drawings, CAM, simulation, render, and PCB sit in the same local project. The full module map lists every studio, including scaffolds.
ECAD
Board in the same tree
Snap routing, DRC profiles, Gerber and Excellon out. Sized for a Voltera mill, not a fab portal.
Assembly
Snap, then mate
Concentric and coincident snaps lock before the dialog stack appears. Instances stay in a local BOM.
Sculpt
T-spline cage
Control mesh in orange. Subdivided surface in vellum. Organic bodies sit next to BREP extrudes in the same studio, not a separate clay app.
Runtime stack
What the binary is made of
The landing page is Next.js. The product is not. Arbor runs as a Tauri desktop app with a Rust sidecar and an OpenCASCADE worker. Full numeric limits and schema notes: specifications.
git clone \ https://github.com/Eerielettuce3717/arbor-cae.git
| Subsystem | Stack | Bound to |
|---|---|---|
| Window | Tauri 2 | Native shell. No Electron tax. |
| Kernel I/O | Rust | PDM, CAM post, filesystem, workers. |
| Solids | OpenCASCADE | BREP, STEP, boolean, mesh buffers. |
| Viewport | WebGL / Three | GPU mesh, view cube, sketch overlay. |
| History | SQLite | Local revisions, WAL, release states. |
| ECAD | PixiJS + DRC | Snap routing. Gerber / Excellon. |
| CAM | 2.5D pocket | Zigzag clear. Fanuc post. |