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Thread: Widening an elbow joint with metal balls - GIF

  1. Jun 26, 2021, 02:40 PM #1
    Jon
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    Widening an elbow joint with metal balls - GIF

    Widening an elbow joint with metal balls. Removing dents?




    Previously:

    Bending a duct elbow to shape - GIF
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  2. The Following 5 Users Say Thank You to Jon For This Useful Post:

    johncg (Jun 27, 2021), marksbug (Jun 27, 2021), mwmkravchenko (Jun 27, 2021), Scotty1 (Jun 26, 2021), that_other_guy (Jun 27, 2021)
  3. Jun 26, 2021, 06:21 PM #2
    bob_3000
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    Must...eat...more...fiber.

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    marksbug (Jun 27, 2021), Moby Duck (Jul 1, 2021), TheElderBrother (Jul 1, 2021), Toolmaker51 (Jun 27, 2021)
  5. Jun 26, 2021, 09:12 PM #3
    mdhatter3
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    I’ve heard of people using steel balls to fix dented headers.
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  6. Jun 26, 2021, 10:14 PM #4
    Skun Knuckles
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    The balls are known as mandrels, this tooling is used in various configurations for pipe and tube forming throughout the metal working industry.
    When I was young and poor I learnt a trade, and after many years of hard work I’m not young anymore.
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  8. Jun 27, 2021, 02:25 PM #5
    marksbug
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    I got some steel balls to open up some SS tubing I'm using to make a set of headers for my car...if I ever get around tuit.
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  9. Jul 1, 2021, 10:13 AM #6
    Elizabeth Greene
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    I saw similar tools used to expand a squished tuba part. It might have been in another post in this forum?
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  10. Jul 1, 2021, 10:47 AM #7
    marksbug
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    I always wanted a tuba squished by a steam roller hanging on my wall.



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