An interesting development in plastics has been the use of UV curing resins. The type used in windshield repair as well as jewelry, surfboards, etc. They are very tough, durable, and very clear. They might be a good choice for repairing a plastic stock, but I haven't tried it yet. It could be as easy as applying the resin, cleaning up any excess, then putting it in the sunlight to cure. Windshield repair kits are available everywhere. I use them in very specific instances on wood and metal, I prefer them to epoxy, but only when shear strength is not necessary.
Regards
Ken
