Suggestions for damaged screw

Discussion in 'The Gun Builder's Bench' started by Columbus, Mar 12, 2019.

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  1. Mar 13, 2019 #21

    rich pierce

    rich pierce

    rich pierce

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    I use a flat graver to recut the slot. Then penetrant, time, then heat.
     
  2. Mar 13, 2019 #22

    dpw21562

    dpw21562

    dpw21562

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    I havd a "very" stubborn screw, soaked it with Kroil and took an old electric engraver and held it on at the screw for an hour or so. Put pressure to it and it broke loose, amazing.
     
  3. Mar 13, 2019 #23

    Carbon 6

    Carbon 6

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    That goes with what I was saying, Kroil = intense vibration. :thumb:
     
  4. Mar 14, 2019 at 2:51 PM #24

    Eric Krewson

    Eric Krewson

    Eric Krewson

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    I bought some stuff on a whim that consists of small diamond particles suspended in a liquid that the makers claim will fill any stripped screw hole and allow you to remove it. I bought some, tried it and dang if it didn't work really well, at least on stripped phillip head screws, I don't think I tried it on a slotted head screw.
     
  5. Mar 14, 2019 at 3:39 PM #25

    Eutycus

    Eutycus

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    I supposed the word luck isnt exactly right, but I've always had fair luck with the cycling like Melnic mentioned. I dont own a heating torch but one can make metal contract by placing it in the freezer for a day or two. But do place the frame in a zip lock bag. Wives tend to object to the smell of penetrating oil especially in the freezer
     
  6. Mar 14, 2019 at 5:18 PM #26

    Melnic

    Melnic

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    Every time I hear someone say to send something to a gunsmith, I have to ask, how much is that gun really worth to you?

    BTW, If you have a soldering gun (gun, not pencil) you can spot heat pretty well.
     
  7. Mar 14, 2019 at 6:10 PM #27

    Carbon 6

    Carbon 6

    Carbon 6

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    I'd be tempted to silver solder a screwdriver in the slot and then put a wrench to it.
    Checkered flag or crash.
     
  8. Mar 14, 2019 at 6:21 PM #28

    Black Hand

    Black Hand

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    Crash!
    In order for the silver solder to flow, you'd need to heat the entire piece far hotter than you would want (Silver solder needs 1000F+, while some silver-bearing solder has lower melting temps). Solder also has poor resistance to shear/torque.
     
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  9. Mar 14, 2019 at 6:27 PM #29

    Carbon 6

    Carbon 6

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  10. Mar 14, 2019 at 6:28 PM #30

    Black Hand

    Black Hand

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    Worst comes to worst - I'd recut the slot deeper & wider (with a dremel - not something I suggest for everyone) and grind a screwdriver to fit or drill 2 holes to fit one of the security bits and turn it out.
     
  11. Mar 14, 2019 at 7:22 PM #31

    Scota4570

    Scota4570

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    I strongly suggest you take it to a competent gunsmith. Not an AR parts changer, but someone with experience repairing real guns and making parts. This is a simple job. It is getting complicated from bad advice. When you find yourself in a hole, stop digging. Time to stop digging.
     
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  12. Mar 14, 2019 at 7:25 PM #32

    Black Hand

    Black Hand

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    Always a good suggestion, especially if you don't have the necessary experience.
     
  13. Mar 14, 2019 at 7:27 PM #33

    arcticap

    arcticap

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    This whole scenario is why I don't take revolvers apart unless necessary.
    Why risk breaking something if a part doesn't need fixing?
    If something breaks, then I'll worry it.
    But if nothing internal is broken, then I'll just leave the internal parts alone.
     
    Last edited: Mar 14, 2019 at 7:33 PM
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