I have a boat hull im designing that a i need to make a triangular cut out in. the hull has multiple angles, facets, and surfaces. the Cut must be 2 inches deep on each surface.without doing the surfaces one at a time, is there a easy way to do this? i was thinking using the entire surface as a plane, then drawing on the edge of the plane. the cut following the plane would do what i wanted. but i cant make that work. any ideas?