Alumni Pro® brazing rod and stainless steel wire scratch brush Alumni Pro® welds aluminum with a propane torch. Welds aluminum, pot metal, galvanized and zinc based metals in 3 easy steps. Costs only pennies an in, stronger than aluminum, no flux and no fumes, strong corrosion resistance and low working temperatures. Use with 1/32 to 3/8 in metals. Applications include lawn equipment, boat propellers, chainsaw repair, carburetor repairs and engine castings.