A Cadewld is composed of aluminum powder copper and a fluxing material. When
fired it makes a alloy of the surface of the steel rod and the copper in the
shot. All the copper wire, copper plating, and copper in the shot alloy
together and create the molded cap you see. You can get carbon molds to weld to
just about any combination of rods, structural steel, or copper wire sizes you
can think of. The thermite (aluminum powder in suspension with oxidizer) was
used in WW II and after to disable large guns by melting barrels or important
parts of breach area
.
Nick
WB7PEK
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