Hey, thanks much, that refreshed my memory a lot! A welding instructor I used to know way back when told about a high manganese TIG rod he used to weld the cast iron cam lobes of a Briggs & Stratton to grind in his own profile for kart racing. He explained to me made the carbon and nickel in the cast iron migrate into the weld and give the weld the same properties as the parent material being welded. Once complete, it was hard to the extent of requiring grinding instead of being machinable. I’ll see if I can find out exactly what he was using, should work perfectly...
