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I bought a piece of copper buss bar at the scrap yard intending to make it into a cutting plate/saddle to fit my anvil. It is about 1/4 thick and 4 inches wide. I have enough to made several of those type plates. After I bought it I was told by another smith that heating the buss bar can be very hazardous. He said you have to grind off the coating (tin?) to make sure it is safe to apply heat to. I am concerned about the heating that would occur when cutting hot metal on it. I can bend it to shape with a fly press so the heating would only be the transfer from the hot metal I was trying to cut. The piece I bought has been ground clean by someone and I think it would make an excellent cutting plate to protect my anvil.