(Topic ID: 121490)

Coloring old backbox bolts and hinges


By TheRingMaster

5 years ago



Topic Stats

  • 7 posts
  • 5 Pinsiders participating
  • Latest reply 5 years ago by TheRingMaster
  • Topic is favorited by 1 Pinsider

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    #1 5 years ago

    Hi!

    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?

    / Andy

    #2 5 years ago

    I've always had fine luck using decent quality spraypaint.

    Clean

    Put the bolts in a drill

    Scuff the heads with a scotch brite pad

    Poke holes in a box, and stuff them in the holes with the heads exposed

    Prime

    Paint

    Clearcoat

    Done, they look great!

    #3 5 years ago

    Yeah thats the way to go if you decide to paint them. But im curious about this other method.. I was thinking maybe its easier (not so much work) to just let them cook in a bath for a while, take em out and let em dry.

    #4 5 years ago

    I saw also coull of days ago that showed someone doing it, I believe it was while I was looking for anodized pinballs (perhaps try searching for something similar) best of luck

    #6 5 years ago

    from an em guy...

    i clean them in an ultrasonic cleaner...

    then i chuck them in a drill, hold a green scrubbie in the palm of my hand, and let the drill do the work... then hit them with a bit of mother's (again using the drill)....

    works for me... i've cleaned up some really nasty looking bolts that way (in addition to shooter rods)...

    #7 5 years ago

    Hm.. I will do some more investigation.. from your tips! It would be very nice if the hinges where possible to fix in a similar way. Ive painted some but its a lot of work and a bit messy, the old coating that may be poisonous and all. I will report back if I find any solution!

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