[TheForge] Hammer heat treating/stainless coloration

[Robert J Hill]

Hello all.
I have a few questions.  One of my coworkers is making some wood 
carving tools from ball pien hammers.  I also have a cross pien that 
tends to be softer than I would like.  What would be a good method for 
heat treating these tools?
My other question is in regards to heat coloration from welding on 
stainless.  Scrubbing the colors off with Scotch-Brite pads and wire 
brushes only goes so far.  Any recommendations for an easier way?
Thanks,
Rob Hill