WTB 3.5x4 tpi Lathe Chuck or Backplate
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  1. #1
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    Default WTB 3.5x4 tpi Lathe Chuck or Backplate

    My lathe is dead in the water until I can find a threaded chuck or backplate.

    3.5" x 4tpi.

    If you know of someone that could make a backplate let me know, I'm willing to pay for the work.

    Thanks!

  2. #2
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    They will need this and your EXACT dimension you got measuring over thread wires

    LeBlond Spindle Nose Thread Pitch

    They will ALSO need all the other dimensions

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  4. #3
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    we could make one, but without EXACT measurements, we'd have to make a few trial sized pieces that could be shipped at more budget friendly rate. also what size plate/ chuck, (adapter?) are you looking for?

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  6. #4
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    Quote Originally Posted by hvnlymachining View Post
    we could make one, but without EXACT measurements, we'd have to make a few trial sized pieces that could be shipped at more budget friendly rate. also what size plate/ chuck, (adapter?) are you looking for?
    Attached are the measurements I took.

    I have a 9" 4 jaw that I'm looking to mount, I figured I could do the final fitting. @hvnlymachining let me know what else you need.

    spindle.jpg
    polsxlr.jpg
    Pic with 8tpi thread gauge(I don't have a 4tpi).
    medsdtr.jpg
    Last edited by pjames6; 09-21-2019 at 03:54 PM.

  7. #5
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    let me know what else you need
    Probably a link that works for the measurements - same idea as the photos you posted of the lathe spindle nose some time ago

  8. #6
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    Fixed the file and added a spindle pic.

  9. #7
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    I think I can make that work. PM sent

  10. #8
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    Nice HIGBEE LeBlond did so long ago (no sharp thread at front end)


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