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Thread: Lathe Cutting Tool Height Gage

  1. #11
    Supporting Member mklotz's Avatar
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    Aug 2015
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    I still have trouble understanding why people want to design tool height gauges with the reference plane hidden under an overhang. In my design, the reference plane is on the top, exposed to sight...

    While I use my sensitive thumbnail (well, the nerves it presses on are sensitive) to detect alignment, I suppose one could slide a small block on the top of the gauge to detect the tool position relative to the gauge.

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    Regards, Marv

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    Paul Jones (May 18, 2017)

  3. #12
    Supporting Member jjr2001's Avatar
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    Jun 2016
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    I just re-read this tool build and must admit I am going to copy it.
    I have been using a cylinder with a scribe mark on it for aligmment. Anyone doing that with a mini lathe
    and QCTP knows that it requires two steps one of which is loosening the QCTP and rotating it. That base is the
    cat's QCTP rotation. Thanks Paul for a fine tool for the shop.

    Cheers, JR

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    Last edited by jjr2001; May 19, 2017 at 08:07 AM.

  4. The Following 2 Users Say Thank You to jjr2001 For This Useful Post:

    Paul Jones (May 18, 2017), Toolmaker51 (May 18, 2017)

  5. #13
    Supporting Member Toolmaker51's Avatar
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    Feb 2016
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    Nothing wrong with a redux, why classics are so named...And may well be first time a lowly hose clamp morphed into drill fixture.
    An old job shop had a Hardinge HLV. No one ran it but I. After a few setups, need for a pirated copy of the Hardinge gauge was realized. Basically like Paul Jones's, no magnets. Three small socket cap screws as 'hardened' feet, intended machine and reference dimension stamped on post.
    New shop; 5 lathes and no gauges...guess what's on tap?
    ...we'll learn more by wandering than searching...

  6. The Following 2 Users Say Thank You to Toolmaker51 For This Useful Post:

    jjr2001 (May 19, 2017), Paul Jones (May 18, 2017)

  7. #14
    Supporting Member Paul Jones's Avatar
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    May 2014
    Del Mar, California
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    The cool thing about the Hardinge style gage is the gage can be used either the way like you do with thumbnail feel on the open surface to check the tool height or checking the tool under the upper lip to feel when the top surface of the cutting tool just touches the gage. I like this style of tool height gage because I do thread cutting on the lathe with the cutting tool set upside down and the lathe running in reverse. It is a universal way to check tool heights and probably something Hardinge realized long ago.


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    Last edited by Paul Jones; May 18, 2017 at 09:01 PM.

  8. The Following User Says Thank You to Paul Jones For This Useful Post:

    Christophe Mineau (May 19, 2017)

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