J-B Weld PlasticWeld is a hand-mixable, fast-setting epoxy putty designed for strong, permanent repairs on most plastics. It forms a durable bond that can be molded and used to build up or recreate missing pieces. It has a 25-minute work time and a functional cure of just 3 hours. It is rated to withstand temperatures up to 300 degrees F and cures to an off-white color. When cured, it can be sawed, drilled, carved, sanded, and painted. Note: Not recommended for polyethylene or polypropylene plastics.