Quoted from NicoVolta:Thanks Stoo. The only looming question I have is this... how long will a full rebuild last? I guess I am about to find out.
Once rebuilt, I'd like to find a non-destructive tool (no sanding/filing) which can do exactly what the magic brush does, but without having to take tight Gottlieb relays apart and such. Basically a way to hit all of the contacts on an already-perfected machine in place. Like doing a routine tooth cleaning... buzz buzz buzz done.
"Why don't you just file/sand all the contacts like the old techs did for years?"
Because grinding metal to clean it leaves a rough surface, debris, and frankly just isn't awesome enough.
For the really deep contacts this method is pretty good as you can absorb oxidation off the contacts from the side, or just spray it off:
