Amazon has the J-B Weld 8265S Original Cold Weld Steel Reinforced Epoxy (2oz) for $3.29 with free shipping on $25+ or with Prime. After mixing the tubes at a 1:1 ratio, it takes 4-6 hours to set and 15-24 hours to cure. Once cured, J-B Weld Original can be tapped, filled, sanded, molded and drilled.