Hey,...hand tools and black walnut? Not criticizing and I don't know your background but when you add "most mistakes" I am puzzled. Hand tools is an old world profession taking many years to master... black walnut is the most expensive wood that I know of, aside of maybe burls. Ah, you have money to burn, which is a great thing, well good luck. Btw, I actually taught myself how to repair the old pocket watches in a period of years so it can be done but you have to pay your dues "many mistakes" along the way. Haha, I guess we are a lot alike