Tangent booleans: the classic hard cases
Two solids whose surfaces touch instead of cross: a rod lying on a plate, a ball on a table, two pipes of the same size crossing, a part rounded into its neighbour. Each pair below goes through union, subtract and intersect. Every body you see is a closed solid with exact faces, checked against its volume worked out by hand. Where the answer is a named touch or an empty result, "View inputs" shows the two solids and where they touch.
More demos
All demos →
Less geometry at the same tolerance
Small holes, fillets and bosses removed and the solid healed watertight, ready for scenes and simulation.
NURBS ops
Curved offsets, shells and surfaces from points
Offsets and shells on curved solids, exact surfaces through point grids, and a mesh turned back into a solid.
6 curved operations Tolerance
Declare the gap, name the weld
A seam that will not close at the model's tolerance welds shut once the edge carrying the gap declares it.
V12 engine
A V12 engine you can run, slice and take apart
Every crank, rod, cam and valve is a real solid, turning in your browser from one dial: the crank angle.
361 parts · 2,850 placementsBuild your own part with NativeCAD
Free for education and makers with a registered key · $200 per seat per year · Kernel SDK for products.