It melts quite nicely at a temperature that Nylon melts at. I wonder who told me it was Delrin.
Anyhow, I'll try glass etching cream, there's a local store that has it in little bottles.
The idea is still to etch the surface so epoxy will grab it.
Chromic acid will etch Delrin and Nylon, but I don't see how I can make the acid easily locally.
The grey end cap is glued to the white part, so I'd guess it isn't Teflon...
