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Thread: Lathe Cutting Tool Height Gage

  1. #11
    mklotz 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...

    Dead simple lathe tool height gauge

    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.
    Regards, Marv

    Home Shop Freeware

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    Paul Jones (05-18-2017)

  3. #12
    jjr2001's Avatar
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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
    Last edited by jjr2001; 05-19-2017 at 09:07 AM.

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

    Paul Jones (05-18-2017), Toolmaker51 (05-18-2017)

  5. #13
    Toolmaker51's Avatar
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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...

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    jjr2001 (05-19-2017), Paul Jones (05-18-2017)

  7. #14
    Paul Jones's Avatar
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    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; 05-18-2017 at 10:01 PM.

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    Christophe Mineau (05-19-2017)

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