geom:intersection

(geom:intersection a b &key color label)

A new solid covering only what both operands cover. The operands are taken in world coordinates and left untouched; the result is a new root solid, with (geom:history result) answering (:intersection a b). Disjoint operands intersect to an empty solid -- no vertices, no facets, volume 0.0 -- rather than an error. See the solid modeling guide.