Today I ran across a BBS airgunning thread and one of the contributors recommended boiling delrin guides in water for 5 minutes prior to installation. He said he never had a broken guide after adopting the method.This notion led me to some research on plastics and apparently Delrin does aneal at 320° F. My question is: has anyone else heard of this or ever experimented with it?Incidentally, I've not broken an installed delrin guide but I have broken one shaving the shoulder in a lathe.
FWIW, in machining 1000s of acetal parts of all shapes and sizes, I found that the white (natural) stuff was always more brittle than the black. I have no idea why.
Quote from: Vee3 on February 15, 2019, 11:44:47 PMFWIW, in machining 1000s of acetal parts of all shapes and sizes, I found that the white (natural) stuff was always more brittle than the black. I have no idea why.Hummmmm.....according to McMaster Carr it seems that both black and white have the same specs regardless of the color..........