I am about to make my first pipe from Irish bog oak. What can I expect for complications? Where do I find a tool to give me the round bottom in my bowl? I have to have a 1 inch opening cause I have mechanic fingers, yeah my finger is 1 inch wide up to the first joint then gets much bigger, so I have to find a large bit. Do I need a heavy carving knife for bog oak or will the exacto style ones work?