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Strange extended chuck on Southbend

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  • Bented
    replied
    It is a setup for producing antilinear escutcheon tubes, these begin on the left side of the part and are cut from the head stock toward the tail stock.

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  • Ian B
    replied
    I don't think it's "for" anything. It just looks like a really nasty bodged way of fitting a chuck to a spindle, nothing else.

    Ian

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  • Peter.
    replied
    Originally posted by mattthemuppet View Post
    it's got a T-slot cross slide too, don't see many of those. I wonder how you change the belt though, doesn't look like there's anyway to release the belt tension?
    Boxford are a South Bend clone and they do slotted cross-slides for those. Very common machine in the UK

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  • DR
    replied
    The odd things about this lathe could be considered an opportunity. The price might be lower than if everything was right about it.

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  • J Tiers
    replied
    I'd put it down to total ignorance of almost anything mechanical. Harsh? Sure. But look at the setup.

    The countershaft setup is simply done totally wrong. That edge that the belt hits is too high, the countershaft assy is mounted on the base wrong, too high, and backwards. The tension adjustment has been ignored and a boss is laying on the added bracket to hold the belt tension. The countershaft assy may even be bolted to the bracket, I can't see enough to understand what the moron did there.

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  • old mart
    replied
    I like the brake rotor suggestion from dian, although doing up the chuck jaws could be difficult.
    With the current lockdown in place, it might be hard to sell as St Austel is fairly remote even in a small island such as this one.
    Last edited by old mart; 03-22-2021, 10:54 AM.

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  • dian
    replied
    maybe for brake rotors.

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  • tom_d
    replied
    Originally posted by ImFred View Post
    Could be someone made a longer spindle to get the chuck out past the warn ways.
    Thought about that, but then I wonder what little would be gained in accuracy compared to appears to be a major loss in rigidity.

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  • mattthemuppet
    replied
    south bend did sell t-slot cross slides, probably as an option, though I've no more info than that.

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  • J Tiers
    replied
    The crosslide looks like an MLA crosslide made from a kit

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  • Arcane
    replied
    Originally posted by boslab View Post
    Seen somthing like it when a guy couldn’t get the part up the spout so he made a kind of jump adaptor to fit the bigger diameter
    mark
    That sounds like the most reasonable explanation.

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  • boslab
    replied
    Seen somthing like it when a guy couldn’t get the part up the spout so he made a kind of jump adaptor to fit the bigger diameter
    mark

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  • mattthemuppet
    replied
    it's got a T-slot cross slide too, don't see many of those. I wonder how you change the belt though, doesn't look like there's anyway to release the belt tension?

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  • BCRider
    replied
    Might just be an adapter from the stock size to one which fit the backplate on the chuck too. But yeah, it's a terrible setup for any sort of serious work.

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  • nickel-city-fab
    replied
    Same machine that I have, but mine is in better condition. 150 lbs sterling for that lathe is such a good deal that I would be all over it right now. Very likely someone made the extension to get around some wear, or for a special job. It helps to remember that they did not harden the ways prior to about 1950 as far as i know. The wartime lathes tend to be particularly worn out. However much of what you see in the ad could work with the Aussie Hercus, and maybe a few others (Boxford?)

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