How To Remove Threaded End Of Broken Pipe?

  1. Pollys13

    Pollys13 Member

    Messages:
    333
    Location:
    Wiltshire UK
    I undid the nipple from one side of the pot trap ok but when did the other the pipe broke. How do I remove the threaded bit of pipe left in the pot? An easy out I don't think would work for this.
     
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  2. 123hotchef Member

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    hammer a torx bit in perhaps
     
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  3. cheb Forum Supporter

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    Is it aluminium or steel pipe?
     
  4. Gareth0123

    Gareth0123 You'll need 16 pigs to do the job in one sitting!

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    My (25 year old) Bluepoint Screw extractors would get that out.

    [​IMG]
     
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  5. Ton-up

    Ton-up Member

    Messages:
    1,418
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    Essex, England.
    Gently cut with a hand held hacksaw blade until you just touch the peaks of the thread. Best if you can do this in 3 places. Then using a small chisel, screwdriver, punch, etc, chisel the broken parts inwards.
     
  6. garethp Forum Supporter

    Messages:
    885
    sw scotland
    If it's the same as my pot either the thread in the pot is oversize and the pipe is nominal or the pipe is undersize and the pot is correct.

    Either way the (big) difference was made up with strong glue like sealer that can be loosened with a bit of heat.
     
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  7. grim_d

    grim_d Forum Supporter

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    They are way nicer than the guff snap on version I've seen.
     
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  8. Pollys13

    Pollys13 Member

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    333
    Location:
    Wiltshire UK
    Steel.
     
  9. Pollys13

    Pollys13 Member

    Messages:
    333
    Location:
    Wiltshire UK
    Metalworking forum suggests internal pipe wrenches?
     
  10. jsf55

    jsf55 Forum Supporter

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    Sunny Swansea
    I've used the tang of a file in the past, but no comparison of size to see if it would work ?
     
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  11. Pollys13

    Pollys13 Member

    Messages:
    333
    Location:
    Wiltshire UK
    Thats an idea, thanks. Just checked thread size on the calipers, is a 3/8 fitting, so will measure wall thickness, to try and get a nice tight fit. It only took about 10 seconds with the butane torch, to get the fittings off the other end. I don't want to mess up the paint finish on the pot, getting the end of the pipe out. I've an offcut of aluminium sheet say 14" x 12" I could drill a hole in,use as a heat sink, shield.
    Anyone other way to protect the paint?
     
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  12. Dcal Member

    Messages:
    1,461
    Location:
    Antrim Northern Ireland
    I'd weld something hammered onto that (8mm stud coupler?) even if you only pick up the part of the thread that is outside the pot I would be very surprised if it didn't screw out.
    The heat will break the seal of the locktite and help free the thread even if it's mad tight.
    I assume that's a bsp tapered thread?
     
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  13. Parm

    Parm I have fun doing stuff

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    They look like they get the job done
     
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  14. Pollys13

    Pollys13 Member

    Messages:
    333
    Location:
    Wiltshire UK
    Yes when I got the other end off it fitted well into a 3/8 bsp female hosetail.
     
  15. Pollys13

    Pollys13 Member

    Messages:
    333
    Location:
    Wiltshire UK
    " I'd weld something hammered onto that (8mm stud coupler?) " I don't that would work? The threads are on the outside, inside is smooth.
     
  16. carbon

    carbon Member

    Messages:
    1,256
    Location:
    S. Glos. U.K
    I see a few of these problems and whilst hammering a torx or multi spine bit doesn’t look very professional it gets the job done. If it’s bonded in then it may need some heat to remove it
     
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  17. Pollys13

    Pollys13 Member

    Messages:
    333
    Location:
    Wiltshire UK
    I could get fragments of steel into the grit, not so great etching the glass.
    Just bought a nipple extractor set 7 quid, with a bit of heat should get it out ok, not sure about protecting the paint finish, don't know how it was applied, butane torch might not damage it?
     
  18. brightspark

    brightspark Member

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    whats the big deal about marking the paint :)its a blast pot not an ornament :laughing:
     
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  19. grim_d

    grim_d Forum Supporter

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    Tell that to @spencer 427
     
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  20. spencer 427

    spencer 427 Member

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    uk colchester
    Location:
    uk colchester
    Right hold on chaps. Now there is a difference between blast pots and lathes. ..getting the broken bit of pipe out shouldn't be to much of a prob. Marking the paint will ultimately result in a strip down and a re paint.....
     
    Last edited: Jan 21, 2020
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