What we usually use are 5/16 or 3/8 diameter M2 round blanks and grind our emboss shape on the tip of the punch and a flat on the side for a set screw to align. Now that we are hitting hardened steel, we are wanting to change to carbide instead for our punches.#1 What do you use to cut through carbide? #2 What type of grinding wheel will cut carbide and is able to have a radius dressed on it? #3 What do you use to dress the wheel? I have never worked with carbide before and need as much info as i can get on the whole procedure. Any and all help is greatly appreciated. Thanks