Hey Bobby, right now I just freehand my plunge lines.
I just picked up a carbide faced file guide that I will probably be using on most of them in the future though.
I use the super blue from birchwood casey, I let this knife soak in vinegar overnight first, brushed on the cold blue (I use a wool dobber and soak it on) , and then lightly buffed it with 0000 steel wool.