Though not as strong as J-B Weld, J-B Kwik is perfect for need-to-fix-it-fast repairs at home, on the farm, or in the shop. When mixed in equal portions at room temperature (70 degrees F), J-B Kwik will set in 4 MINUTES, and cure in 4-6 HOURS! Use J-B Kwik on iron, steel, copper, aluminum, brass, bronze, pewter, porcelain, ceramic, marble, glass, concrete, fiberglass, wood, some plastics, and other clean, dry surfaces. J-B Kwik is nontoxic, and temperature resistant up to 300 degrees F. When fully cured, J-B Kwik is waterproof, petroleum, chemical, and acid resistant. J-B Kwik can be drilled, tapped, machined, filed, sanded, and painted. J-B Kwik is kwikly establishing its name in the market.