This homemade and all natural, this resin is perfect for any survival kit. The pine resin based adhesive is heat activated for attaching dissimilar materials that have different coefficients of expansion like metal or stone blades to wood, bone or ivory handles. This formula was developed originally using traditional and natural materials for attaching stone points to wooden arrow or dart shafts. The bond is able to withstand shear forces; tough yet flexible it adheres well to many different materials, as long as all parts are dry. It forms a durable composite when used in conjunction with fibers as long as the fibers are thoroughly saturated, and all air is pressed out of the joint. A broken joint can be reheated and attached again and again as often as necessary.