The deep groove rasped from the cap to the top of the wrist determines the finished thickness of the grip and serves as a target depth(thickness) to shape to.
I've got a step-by-step manual for shaping a bolt action rifle stock that is adaptable for shaping most any conventional stock. So yes, John you are correct on both counts.

Irl's series of photo show most of what he accomplished on Wed. including a very worrisome void that did rasp away. It also shows a good view of what I call the "chainsaw" rasp and why it is just the tool for bulk wood removal.

Some think a draw-knife or spoke shave (edge tools) appropriate for stock shaping. They only work properly on certain types of wood grain while a rasp will shape virtually any grain presented.
I'd be glad to field other questions but please remember that the Seminar is five full days, some 50+ hours and it takes the entire time to rough shape a gunstock.

Last edited by SDH-MT; 06/28/18 12:05 PM.