Cures & joins together by a chemical reaction between the resin and the hardener. It offers good bonding strength and will harden in approximate 30 minutes, achieve full strength after 8 hours. It Is versatile, shock resistant and tolerant to fuel and solvents. Ideally for repairing metal, wood, concrete ceramic etc. It can cure to a tough, steel-filled material that can be drilled, tapped and sanded.