When restoring games I always end up buying new bolts for the backbox, coin door, PF hinges and sometimes even the backbox hinges (the metal plates).
Ive tried painting them and the result is allright but it would be nice if there were some other way. Ive heard somewhere people put the bolts in some solution, maybe acid or something, and that gave the bolts a good black color which was nearly spot on the original.
Thinking about it some I thought maybe the bolts and hinges etc. are not even painted from the factory but rather dipped in some nasty stuff that turned them black. If you look closely on some bolts that are not rusted or otherwise worn the color seem to be black/brownish rather than solid black.
I did some searching on the net and found that for industrial use they do something like this to make bolts and other machine parts black and to get them somewhat protected against corrosion.
Also found that there is a method called "blueing" that you use on guns to make them black/blueish.
(heres a link: http://en.wikipedia.org/wiki/Bluing_%28steel%29)
So, have anyone on here tried any method like these or maybe someones good at chemistry and can come up with some magical recipe for a solution in which you can put your backbox bolts and hinges to make them look brand new without having to sand them forever and spray paint them?