Welding Copper Block. Copper block 50mm 2 square made of high purity solid copper for puddle welding with your MIG. Pure argon may be used for TIG welding up to a thickness of some 2mm and for MIG welding up to approximately 5mm - above these thicknesses an argon-helium mixture will give better results with greater heat input and less risk of lack of fusion.
Solid wires and rods for fusion welding of copper and copper alloys. Its just a backing to pull away head and reduce blow through. Trying to fill small holes can be frustrating but one of these makes it easy.
Plug Welding Holes in Sheet Metal with Magnetic Copper Backers - Mike Finnegan at Hot Rod - Eastwood - YouTube.
1-34 by 2 by 18 - hollow with holes. You can also choose from bending cutting copper block weld as well as from non-alloy is alloy copper block weld and whether copper block weld is plate. Copper block 50mm 2 square made of high purity solid copper for puddle welding with your MIG. Shielding gases for welding are argon helium and nitrogen or mixes of two or more of these.