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this has been asked 1000's of times

cer
how do you repair a messed up screw slot?
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9 comments

Date Votes
  • charliemeyer007
    Sometimes you can flow the metal back in place with a hammer blows using a modified ball peen. You could weld it shut with a matching alloy and re-cut the slot.

    Added A slotting file is the tool of choice but a metal saw blade of various types can work. Cold Blue on warm to hot metal. Sometimes heat blue first. A small deep sauce pan of real hot bluing salts. Dressing screws: a pin vice or chuck them up in a drill press. Crocus cloth with a wood backer. Stones and files if you are shaping a new head.

    Maybe plate the original trigger. Could be a DIY project of send it off for pro treatment.
    https://www.youtube.com/watch?v=uM9a91EMJpw
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  • He Dog
    In most cases it is easier to replace the screw. Unless you are a smith with machine skills and bluing.
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  • SwanKong
    screw slot file and cold blue.
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  • 317wc
    Swedge the metal back in with light hammer blows, dress slot and polish, depending on what kind of screw and where it goes you can "color" with a common propane torch.
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  • yoshmyster
    quote:Originally posted by SwanKong
    screw slot file and cold blue.


    Only if you hae enough metal other wise ou might snap half of it off as you're installing it or removing it.

    Like He Dog stated it's easier to replace it.
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  • cer
    It's a stock and trigger plate screw from a 1969 Sweet 16. the gold plate has worn off the trigger I need to replace it with a new gold trigger, to make it 99% again
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  • KAMsales
    quote:Originally posted by 317wc
    Swedge the metal back in with light hammer blows, dress slot and polish, depending on what kind of screw and where it goes you can "color" with a common propane torch.


    ^ this

    Peen the metal back into the slot and then recut the slot with a small file. For coloring you can either use cold blue or do it the old school way and carefully heat the screw up until it turns blue in color then drop it into some light oil such as ATF.
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  • the yooper
    Here's a quick video showing Larry Potterfield of Midway USA repairing burred screw heads on a Model 12.
    http://www.youtube.com/watch?v=FJchuIElrgI
    He sure ends up with a nice looking job and it's still an original part.
    yooper
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  • MG1890
    quote:Originally posted by cer
    It's a stock and trigger plate screw from a 1969 Sweet 16. the gold plate has worn off the trigger I need to replace it with a new gold trigger, to make it 99% again


    The only way to really make it 99% is with a new screw, not a "repaired" old screw. This should not be hard to find.
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