Ken, in the gunsmithing course Bob talks about TIG welding with oil hardening steel. What do you use for filler metal for this. At the local welding supply they have a variety of filler rods for TIG welding, but none are identified as oil hardening. Could you use drill rod or spring steel like they sell at Brownells?
DO NOT USE DRILL ROD. That will be brittle and break. I use the straight spring stock from Brownells.
Answer:
Contact Lincoln, Miller or Hobart customer service, they can help you with all of the welding tech stuff if the local guy can’t. You really want the 2% Thoriated rods of the right steel.
