Consider this:

import cadquery as cq def makeBox(): return ( cq.Solid.makeBox(1, 1, 1) ) def makeCylinder(): return ( cq.Solid.makeCylinder(height=5, radius=0.2) ) result = ( cq.Assembly() .add(makeBox(), name="b") .add(makeCylinder(), name="c", loc=cq.Location((0, 0, 3))) )

When you put this into Blender, the relative locations of these two objects are not respected.

I think we can get this solved along with introducing per member material for each object in an assembly. If the author is fine with this I can write a patch.