You should try the wall niche instead – that can create pyramidal or wedge shaped cutting bodies – same as the cutform command.
In some situations, you’ll need more than one cutting bodies to have the proper cut on each sides – especially with reveals. Many of the standard shapes are handled by the WallholeCut macro in ARCHICAD library, you can check that too.
Gergely Fehér
Team Leader, Library Team
GRAPHISOFT SE