Since nobody else has responded, I'll try. I'm not sure what the plastic thing is, but I use epoxy for almost all such repairs. Done properly, the repair is almost invisible and the epoxy adhesive can be blended into most finishes. It takes a bit of know-how to use epoxy. One thing is that it has no "grab", so the pieces must be firmly clamped in position. Also, epoxy will stick hard to just about everything, so anything it might get onto needs to be masked or protected with wax. I use Johnson's Paste Wax, but even shoe polish works. Use a good epoxy, not the 5 minute crap. As a rule of thumb, the longer it takes to set up and cure, the stronger it will be.
I couldn't live my life without epoxy. Just ask my wife.
Paul
