Powerful marine epoxy, the Original Cold Weld two-part epoxy system 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 colour. 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 287?C when fully cured. Sold in quantities of 6..