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  1. #1

    Default collars for dumbell

    Hi, I wonder how they made the collars for this load able dumbell Handel.
    Attached Images Attached Images

  2. #2

    Default collars for dumbell

    I made one before with 50mm/2 inch washers but they were a bit thin

  3. #3

    Default collars for dumbell

    The bar and Handel is 2iinch/50mm

  4. #4
    Join Date
    Dec 2011
    Posts
    382

    Default

    There is too much paint on it to tell. Could be a casting, a forging, a welded assembly or machined from a large enough bar.--Meltedmetal

  5. #5
    Join Date
    Jul 2009
    Location
    Australia
    Posts
    1,031

    Default

    Could be lathed. the ones with thread on the ends are.

    Ji
    Grip it and Rip it

  6. #6

    Default

    Here's better pics
    Attached Images Attached Images

  7. #7
    Join Date
    Apr 2011
    Posts
    356

    Default Wow...

    Never have I seen something so simple be treated like it needs to be sent to NASA for analysis...!
    It is punched out of flat stock...like plate or bar.
    You can see the die marks on the edge...or punch marks, however you decide which one leaves them.
    MillerMatic 211 Auto-set w/MVP
    Just For Home Projects.

  8. #8

    Default collars for dumbell

    They cut from plate not punch if they are old it was oxyfuel. Newer ones are made using plasma or laser.

  9. #9
    Join Date
    Sep 2005
    Location
    northern NJ
    Posts
    1,821

    Default

    The discs are burned from plate. Either oxy/acet or plasma. My guess the ones in the pic are oxy/acet. With a burning machine doing a large qty. the cost would be cheap. To make just a few it wouldn't be profitable for resale.

    Today plasma would most likely be used.
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  10. #10

    Default collars for dumbell

    So they just plasma cut the holes out of a 1/2 inch 25mm plate?

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