Don’t scrap that damaged item that nothing else can fix! J-B WELD is an incredibly versatile product that can repair everything from damaged welds and solders to a precious heirloom. Save money, save time, and save your sanity for drastically less money than other forms of permanent repair. J-B Weld is The Original Cold Weld two-part epoxy system that provides strong, lasting repairs to metal and multiple surfaces. Mixed at a ratio of 1:1, it forms a permanent bond and can be shaped, tapped, filed, sanded and drilled after curing. At room temperature, J-B Weld sets in 20-25 minutes to a dark grey color. A full cure is reached in 15-24 hours. J-B Weld has a tensile strength of 3960 PSI and sets to a hard bond overnight. It can withstand temperatures up to 550ÂºF when fully cured.