Just squeeze equal parts from the 2 separate 1-oz. tubes onto a mixing surface and mix thorougly with a putty knife or similar tool. J-B Kwik Is A Fast Set – Cure Version Of J-B Weld That Will Set In 4 Minutes And Fully Cure In 4-6 Hours, Waterproof, Petroleum, Chemical, And Acid Resistant Once Fully Cured, Non-Toxic And Is Temperature Resistant Up To 300 Degrees, Can Be Used On Almost Any Surface – Bronze, Porcelain, Ceramic, Marble, Glass, Wood, Concrete, Fiberglass, Steel, Iron, Copper, Aluminum, Abs & Pvc Plastics, When Fully Cured J-B Kwik Can Be Drilled, Tapped, Machined, Filed, Sanded And Painted.