I'm making a knife from 0-1. It is 1/4 in stock. I'm doing it by stock removal. It is a big knife. My question is how close to finished do I need to get the knife before I send it to a heat treater? How far from the edge being sharpened and how close to a mirror finish do I need? Also, can I have the knife selectively hardened and who are some people I can send it to? Thank you for all and any help.