[Michael C Henry]

I've cleaned up the threads on the 8 EM button head ferrules I have. They may be SS but have a strong magnetic attraction. The threads had ruff spots where it would take considerable effort to advance the nut. I used a triangular jeweler's file. The ruff threads looked as if they may be what you'd often see with SS. When you milled the fiberglass door for the ferruled, How did you do it? I'd probably use a Dremel an end cutting bit and a magnifier glasses, and get comfortable and take it slowly