Verify the guitar body and the cone are both solids before performing Boolean Diff. To do so, select each object and look in the upper right of the main window. It should say "Solid".

Verify using cone is perfectly vertical and not tilted. Probably a good idea to construct a new solid cone and verify it snaps vertical.

Verify using the alignment tool that the base of the cone is on the same plane as the top of the guitar body.

Can you post the 3DM file?

BTW - Tried to send you a PM but the following error was encountered:

"VEGASGUITARS has opted out of receiving personal messages"


Ed Ferguson