J-B Weld PlasticWeld is a hand-mixable, fast-setting epoxy putty that forms a durable bond to most major plastic types. After mixing, it forms a polymer compound that can be molded or used to build up and repair just about anything made from plastic. When cured, it can be sawed, drilled, carved, sanded and painted. PlasticWeld has a 20-25 minute work life; functional cure occurs in 2-3 hours. PlasticWeld cures to an off-white color, is rated at a tensile strength of 350 PSI. Does not adhere to polyethylene, polypropylene or some other plastics. Test for adhesion first.