Bondic Liquid Plastic Welder
More a sort of welder than a glue, Bondic is the quickest and simplest way to fix or fill nearly anything made of plastic, wood, metal, or fabric. Bondic is much easier to use than glue since it can be positioned — think welding — without drying too quickly, nor will the liquid in the tube dry if you forget to recap it. Then, expose Bondic to UV rays using the included light for four seconds to harden it into solid plastic, at which point it can be painted, sanded, or polished to your desired finish.
Pick up a starter kit on Amazon – $22