Aspen500
Well-Known Member
Don't think I've ever done brazing on cast iron. The most I did was electric arc WAAAAAAAAAAAAAAAAAAAAAAY back in a high school metals class, about 40 years ago. I recall beveling the crack or broken piece, cleaning with a stainless brush and preheating. If it was a crack, drilling a small hole at each end to prevent the crack from migrating further and THEN preheating. Weld it up using high nickle content electrodes and then let it cool slowly back to room temp. I'm sure there was more to it than that but as I said, it's been 40 years.