Hello, I've been messing with this for a couple of days so maybe one of you can give me a point in the right direction. Created a profile, used revolve to create basically a 360 degree corrugated cylinder, round on one end, coned down on the other. The solid looks great. Created a cube which lies beneath the cylinder so the cylinder rests half in and half out of the cube. Essentially this is to be a two part cavity mold of the cylinder negative. Half in top, half in bottom. The solids subtract feature seems to work correctly but it's only showing the outline of the solid. When switching to transparent it shows the cavity is there but switching back to non-transparent the cavity disappears and the outline reappears. When I try to cam the part it ignores the cavity but not the outline. I do notice that the original profile line for the revolve still shows up on the solid even though the cad of that line is inactive. Thanks in advance. Bobcad V28.