Robert, I was wondering if it was one of those plastics impossible to glue. And, this raccords with your last comment Ed, at work we used a lot of polypropylene because it resists high temperatures and acids. That was polyfused which is exactly autogenous welding. Only with hot air, not flame of course. I thought first of trying that but the risk of my amateurish work destroying the minuscule piece discouraged me!
I also thought of machining one as you mentioned Ed. Still possible.
Thinking of the best course of action now!
Thanks,
Renaud
