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How do you check your threads when threading on lathe ?

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  • #61
    Originally posted by eKretz View Post
    Yeah, it's pretty application specific when you get a job. For instance, something like a bearing locknut you need to be right on the money or you may add runout to the assembly when the nut is tightened. For garden variety fasteners on something like a hose clamp or what have you, you can do whatever you want...
    That's actually a great example, because at my old job I actually *was* the millwright.
    And yes, bearing fits and locknuts got measured and specced to the 4th place.
    Those $5,000 SKF bearings had to be spotless and spot-on.
    But I'm not gonna waste that kind of time and energy on a garden variety bolt for a pipe flange.

    In my home shop, the only time I need to mic a thread is if I need a very specific fit. Or if I'm making an oddball for some reason.
    Otherwise if it fits thru one hardware store nut, then you *know* it will fit thru every other hardware store nut, because that's how loose the spec is on those.
    25 miles north of Buffalo NY, USA

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    • #62
      When i started this thread I thought it was a home shop type thread and situation..
      so it was more of a do you look it up, or do you use nuts on hand.... and how do you store them ..that sorta thing.
      Sure there are always precision applications, but a lot of us dont encounter that.. sometimes ever.

      That said, i do enjoy single pointing and its challenges.. things like having to recut threads... re positioning the tool on a n existing thread... not so much fun if its internal or metric .. or things like doing a 1/2 or 5/8 feedscrew 20 or 24 inches long without a follow rest.....having to compensate fir the rod bending away from the tool.... a bit of challenge but rewarding to do .

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      • #63
        Originally posted by 754 View Post
        When i started this thread I thought it was a home shop type thread and situation..
        so it was more of a do you look it up, or do you use nuts on hand.... and how do you store them ..that sorta thing.
        Sure there are always precision applications, but a lot of us dont encounter that.. sometimes ever.

        That said, i do enjoy single pointing and its challenges.. things like having to recut threads... re positioning the tool on a n existing thread... not so much fun if its internal or metric .. or things like doing a 1/2 or 5/8 feedscrew 20 or 24 inches long without a follow rest.....having to compensate fir the rod bending away from the tool.... a bit of challenge but rewarding to do .
        Thats refreshing, coming from you. A full time or regular machinist as are many here.

        What many here are, are not machinist.

        We may be from some other profession. Say a white collar worker that has a hobboy in his garage.

        It might include a lathe and drill press.

        Thats Us, Home shop machinist, doing our best... JR

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