Sample CAD Files — OpenShape3D

40 × 24 × 10.5 mm

A small bracket with two through-holes, a raised boss and rounded edges. The classic first part — and a quick, clean print.

50 × 55.7 × 8 mm

A cam plate with a bore, from one sketch and one extrude — the shortest history of the four, and the easiest to start editing.

Ø 65 × 230 mm

One half-profile revolved into a bottle, shelled hollow through the neck, with filleted lip and base.

Ø 957 × 333 mm

A two-body assembly — tire and rim — built from revolves, tapered extrudes, circular patterns, a mirror and booleans.

Opening an .os3d project

Download the file — on iPad or iPhone it lands in Files ▸ Downloads.
In OpenShape3D's design gallery, open the ••• menu and choose Import Project…
Pick the file. It opens with its full history — tap any feature to change a dimension and watch the model rebuild.

No iPad handy? Each sample also opens in your browser at app.openshape3d.com, which can import any .os3d file too.

These four also ship inside the app — choose Add Sample Designs from the same ••• menu.

Units are millimetres, the default in every common slicer.
Every mesh is watertight and ready to slice.
The motorcycle wheel is modelled at full size, nearly a metre across — scale it down to fit your printer.
Want STL, OBJ, 3MF, GLB or USDZ of your own designs? Use the Export menu in the editor.