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Thread: Improvements to the quill lock on a milling machine.

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    Supporting Member tonyfoale's Avatar
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    Improvements to the quill lock on a milling machine.

    This is probably the simplest post that I have made here, but the ratio of utility to effort is very high.
    The video says it all.



    Other tool videos at https://www.youtube.com/playlist?lis...O1hdmUIYO28Def

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    12L14 (Jul 31, 2019), Andyt (May 10, 2019), Corm (Mar 28, 2019), HUMARIA (Mar 28, 2019), Inflight (Mar 27, 2019), jimfols (Mar 27, 2019), johncg (Jun 25, 2021), JTC (May 11, 2019), melbakid (Jun 24, 2021), mwmkravchenko (Mar 28, 2019), RetiredFAE (Jun 24, 2021), Scotsman Hosie (May 9, 2019), Seedtick (Mar 27, 2019), Tonyg (Mar 28, 2019), warsztatOdZera (Mar 28, 2019)

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    Supporting Member jimfols's Avatar
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    Thanks Tony,
    Manys the time I have looked at or touched that quill lock to make sure it was not snugging up. I never dreamed of such an easy fix.
    Jim

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    Supporting Member Toolmaker51's Avatar
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    Of all the features making knee mills what they are; their quill lock might be the worst. It's conveniently placed but infrequently used. All kinds of aftermarket solutions have popped up; springs, magnets, counter-weights, none stayed on market long.
    It's good its found a way into the forum.

    Reversing the assembly is less common now, but an old practice.
    Probably due turnover of less committed machinists, with fewer experienced mentors.
    Sincerely,
    Toolmaker51
    ...we'll learn more by wandering than searching...

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    Supporting Member TrickieDickie's Avatar
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    Very clever Tony

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    Paul Alciatore's Avatar
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    Neat! And it didn't cost a dime.
    Paul A.

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    Supporting Member tonyfoale's Avatar
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    Quote Originally Posted by Toolmaker51 View Post
    All kinds of aftermarket solutions have popped up; springs, magnets, counter-weights, none stayed on market long.
    I didn't know that commercial solutions existed.

    Quote Originally Posted by Toolmaker51 View Post
    Reversing the assembly ......., an old practice.
    I didn't know that either. I often reinvent the wheel.

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    Scotsman Hosie (May 9, 2019), Toolmaker51 (Mar 28, 2019)

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    Thanks tonyfoale! We've added your Quill Lock Modification to our Machining category,
    as well as to your builder page: tonyfoale's Homemade Tools. Your receipt:




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    Supporting Member Toolmaker51's Avatar
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    When I posted those goofy remedies, even googling them, pulled up zero. One was called "Quill Cock"; a molded plastic counterweight in red - profile of a rooster. To not appear in X hundred-thousand returns about insignificant as can be.

    They'd been better off, compelled to front mounting; use a left hand thread for CCW operation and some kind of adjustment so it would lock without interference from casting.
    Last edited by Toolmaker51; May 10, 2019 at 04:06 AM.
    Sincerely,
    Toolmaker51
    ...we'll learn more by wandering than searching...

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    Supporting Member tonyfoale's Avatar
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    Quote Originally Posted by Toolmaker51 View Post
    They'd been better off, compelled to front mounting; use a left hand thread for CCW operation and some kind of adjustment so it would lock without interference from casting.
    Both good points. A LH thread would have cost the factory nothing. An adjustment system might have added a penny or two, but at least they could have provided say 4 to 6 positions for the handle.
    In any case I have found no disadvantage with having a rear mount, I have used the rear mount for over 10 years.

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    Supporting Member marksbug's Avatar
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    Quote Originally Posted by tonyfoale View Post
    Both good points. A LH thread would have cost the factory nothing. An adjustment system might have added a penny or two, but at least they could have provided say 4 to 6 positions for the handle.
    In any case I have found no disadvantage with having a rear mount, I have used the rear mount for over 10 years.
    this is a good idea for some, buit for me outa sight outa mind....I would still leave it tight. I just added a nice stiff spring inbetween so they were held apart. witch pretty much keep the arm up when you unlock it. and down is locked. I did that years ago....but i still check every time I use the machine.old habbets seem to be hard to break. my quill has some good marks on it from somebody not paying attn.... before I got the refurbusshed machine... I dont know who/what company refer bushed it, but i think they just had a joint in 1 hand and a spray can in the other hand....smoking their referbush and spray painting the mill. you cant fix stupid, ugly can be fixed, stupid ..not!!! good thing I didnt pay a lot for it...( it's fine, but not reworked like it should of been,or that I was led to be leave)

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