SolveSpace is a free (GPLv3) parametric 3d CAD tool. Applications include:
- Modeling 3d parts — draw with extrudes, revolves, and Boolean operations
- Modeling 2d parts — draw the part as a single section, and export; use 3d assembly to verify fit
- Modeling 3d-printed parts — export the STL or other triangle mesh expected by most slicers
- Preparing 2D CAM data — export 2d vector art for a waterjet machine or laser cutter
- Mechanism design — use the constraint solver to simulate planar or spatial linkages
- Plane and solid geometry — replace hand-solved trigonometry with a live dimensioned drawing