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Type: Posts; User: randyc

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    FWIW, I made a collet chuck about ten years ago...

    FWIW, I made a collet chuck about ten years ago and was worried about welding so I shrunk the chuck to the backing plate, about .004 interference. No problem, no distortion, no misalignment.
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    Try: Chrome: Photobucket Embedded Image Fix -...

    Try:

    Chrome: Photobucket Embedded Image Fix - Chrome Web Store
    Firefox: Photobucket Fixer – Add-ons for Firefox
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    Lots of ideas here and most are similar,...

    Lots of ideas here and most are similar, including mine. This is a compact design that I posted here a few years ago; there is a dimensioned drawing in post #17. It has been suggested that these...
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    From the looks of those photos, you did damn good...

    From the looks of those photos, you did damn good !
  5. If spark plugs are excluded: A wire type can...

    If spark plugs are excluded:

    A wire type can (by feel) measure distances between two surfaces (and detect whether they are parallel) at any point it can be slid along their length but won't tell...
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    And the Navy training manual which can be found...

    And the Navy training manual which can be found on many sites, here's one:

    http://www.woodworkslibrary.com/repository/machinery_repairman.pdf
  7. Thread: Press Fit

    by randyc
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    Thia may not be practical but in a similar...

    Thia may not be practical but in a similar situation some years ago, two sets of parts were first measured and sorted by size. Undersize parts were used only in undersize holes etc.

    Would depend...
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    Yep, sounds like Westinghouse, Dale :o)

    Yep, sounds like Westinghouse, Dale :o)
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    More Circle Dubya Tales

    At the time that I worked at Westinghouse, it was in a state of semi-confusion. The Marine Division had been established in Philadelphia near the Navy Yards many years previously. I dunno' why the...
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    Dale, that is a cool anecdote !

    Dale, that is a cool anecdote !
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    John, I'd say that you're right ! I read the...

    John, I'd say that you're right !

    I read the thread that you linked and it stimulated a few more Westinghouse memories. One responder to that thread, followed by several others, noted that there...
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    Of course you did, of course you do and of course...

    Of course you did, of course you do and of course not -
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    The last word is yours, Bill. As always (Oh...

    The last word is yours, Bill.
    As always


    (Oh wait ....If we need only heat the backplate as you mention, think about it: 19% of the weight = 19% of the heating time. "Wind" doesn't reduce...
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    I'm not much for public arguments, mate, but...

    I'm not much for public arguments, mate, but that's incorrect.

    According to Google, hairdryers produce some 800 to 1800 watts of real warmth. Back of the napkin calculation for an 8 pound chuck...
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    Agree with the previous post although I'm not...

    Agree with the previous post although I'm not sure about either the "nano" OR the "micro" :o)
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    I had the pleasure of working at Westinghouse...

    I had the pleasure of working at Westinghouse Marine Division on Hendy Avenue for four years. I worked in the Engineering Department and was one of a very small, very lucky group that participated...
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    I presume that the modulus of elasticity is the...

    I presume that the modulus of elasticity is the same for both materials, so your simulation should work, with some qualifications.

    I'm not familiar with solid works but some FEA applications don't...
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    My 73 YO brain (STM span=five minutes) probably...

    My 73 YO brain (STM span=five minutes) probably un-helped by that last glass of wine, mistakenly confused him with another HSM contributor who passed away late last year. I sure hope that nothing has...
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    The bed width on mine is 7 inches. FWIW, the...

    The bed width on mine is 7 inches.


    FWIW, the late and much-missed J.C. Hannum wrote this:

    The late model 11" & 13" Sheldons were both built on the same heavy bed, with the same headstock. The...
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    Your question prompted me to look at some of the...

    Your question prompted me to look at some of the paperwork that the previous owner accumulated and I found a couple of curious points. I skimmed the material six or seven years ago when I bought the...
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    Thanks for the correction. (FWIW, The...

    Thanks for the correction.

    (FWIW, The CDCO-distributed blank backplates are 2-1/4-8 and the one that I bought was a very nice fit. There was almost no movement while shaking the backplate...
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    OK, I've not had a problem removing chucks before...

    OK, I've not had a problem removing chucks before so this is ALL intuition:

    Obtain some penetrating oil (Kroil ?) and squirt a bit into the rear joint of the backplate/spindle every day.

    Back...
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    Hi Bill, I'm far from being an expert so I'm just...

    Hi Bill, I'm far from being an expert so I'm just commenting as a fellow Sheldon owner.

    Regarding tailstock centers, a good dead center, properly maintained, will always provide better results...
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    I would call .001 over 14 inches toolroom lathe...

    I would call .001 over 14 inches toolroom lathe accuracy and wouldn't tinker with the tailstock for now. It's probable, no it's inevitable, that unclamping it, sliding it to a different position and...
  25. As well as the convenience of having two machines...

    As well as the convenience of having two machines of differing capabilities, if they are old manual lathes like mine, the second lathe might be real useful if the other lathe becomes ill.
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