Multi-Part Assembly
Design parts individually, then mate them together into a fully constrained assembly. One integrated mode in the ribbon — no add-ons, no plugins, no confusion about which assembly tool to use.
Try It Free — 1 Month Trial
Real Mates, Not Manual Positioning
In tools like TinkerCAD, "assembly" means dragging shapes until they look aligned. Move one piece and nothing else adjusts. BasicCAD uses geometric mates — mathematical constraints between faces, edges, and axes that the solver enforces automatically.
Coincident
Two faces flush against each other. Seat a lid on a box, align mounting flanges, stack plates.
Concentric
Cylindrical axes aligned. Snap a bolt into a hole, seat a shaft in a bearing bore, center a knob.
Parallel
Faces held at the same orientation. Components maintain relative alignment as the assembly updates.
When a part dimension changes, mates keep the assembly correct. No manual repositioning — the solver handles it.
One Assembly Mode — Built In
FreeCAD has multiple competing assembly workbenches. SOLIDWORKS and Inventor require a separate assembly file that references external part files (and breaks when you move folders). BasicCAD's assembly is a single integrated mode accessible from the ribbon — parts and mates live in the same feature tree, in the same project file. Open your project on any device and everything is intact.
Assembly Workflow
- Design each component as a parametric part
- Switch to Assembly mode from the ribbon
- Insert components into the assembly
- Select faces/edges and add mates
- Export the complete assembly as STEP
Build Your First Assembly
1-month free trial. Full assembly mode with all mate types. No download, no credit card.
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