Several shapes can be removed (subtracted) from another. The result is the logical difference of shapes.

Note: The first shape given is the base shape for all subtractions.

let shape = difference(sphere({r: 1, center: true}), cube({size: 1.5, center: true}))

The CSG library functions can also be used. NOTE: Deprecated in the V2 API

sphere({r: 1, center: true}). subtract(cube({size: 1.5, center: true}))