I am working on a design for a hardwood door that would feature square, pyramidal panels. In masonry such shapes are called "diamonds". The question is how to shape the panels and do the joinery into the structural members of the door. I have shown the section and elevation below with approximate measurements:
Trying to cut the panels out of a single slab of 2" board has challenges, but on the other hand trying to make them in pieces also has complexities.