how to hold indicator ?

Discussion in 'Advanced Gunsmithing & Engineering' started by Hal, Feb 9, 2019.

  1. Hal

    Hal

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    I have a Intrepid 312b-15 coming in the mail and was wondering what fixture works best to hold it to indicate barrel . I don't have any way to hold the dovetails. What do I need?

    Any pictures of a set up?

    Thanks for the help.

    Hal
     
  2. Dusty Stevens

    Dusty Stevens COVFEFE- Thread Derail Crew Gold $$ Contributor

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    I use a flex head mag base. Mine are starrett but the cheaper ones like from grizzly work fine
     
  3. M21

    M21 Gold $$ Contributor

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  4. Cloudrepair

    Cloudrepair Gold $$ Contributor

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    This is something that works good for me one is some height gage holders from mitutoyo that I have in tool holders for my quick change on the lathe the other is a universal arm in a mill holder but it would work great on the lathe also.
    Then I have a large universal arm on a large mag base for reaching the out board spider- barrel.
    I will see if I can find the pic there are plenty of ways to hold one a cheap mag base from harbor freight would work to.
     

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  5. ridgeway

    ridgeway

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  6. Cloudrepair

    Cloudrepair Gold $$ Contributor

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  7. GenePoole

    GenePoole

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    I have the Shars Noga knockoffs. Work pretty good. These are B&S BesTest DTIs but work the same:

    [​IMG]
     
    Last edited: Feb 20, 2019 at 10:06 AM
  8. Cloudrepair

    Cloudrepair Gold $$ Contributor

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    B&S are good and the shars are good I just prefer indicating off the bore and that brings another argument into question.
    It is easer to hold the indicator than figure how you want to indicate what you are indicating
     
  9. Hal

    Hal

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    Thanks for the replys.

    Hal
     
  10. liljoe

    liljoe Silver $$ Contributor

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    This is the way I mount my indicator. 20170724_181302.jpg
     
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  11. carlsbad

    carlsbad Lions don't lose sleep over the opinions of sheep. Gold $$ Contributor

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    Noga here.
     
  12. GenePoole

    GenePoole

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    For long-reach DTIs, I use the Noga on the cross slide so it can be run in and out of the bore, and set the indicator concentric with the bore, so that when you run it in and out, the stylus is dead center at the ball and at the shank near the max travel. Then I adjust the stylus to just contact the bore. It should then run without interference anywhere down the bore.

    [​IMG]

    [​IMG]

    [​IMG]
     
    Last edited: Feb 20, 2019 at 10:11 AM
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  13. eddief

    eddief Gold $$ Contributor

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    NOGA or bust:)
     
  14. mikecockcroft

    mikecockcroft Silver $$ Contributor

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    Grizzly are junk. Look for noga when on sale. I made fixtures to hold indicators on my tool post on the compound
     
  15. ridgeway

    ridgeway

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    MSC has a 35% off code (FEB35) till tomorrow. You can get a smoking good deal on a NOGA.
     
  16. PatMiles

    PatMiles Gold $$ Contributor

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  17. PatMiles

    PatMiles Gold $$ Contributor

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  18. jamesh

    jamesh Gold $$ Contributor

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    I do the same as liljoe but I mount the test indicator directly in the tool holder.
     
  19. Dusty Stevens

    Dusty Stevens COVFEFE- Thread Derail Crew Gold $$ Contributor

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  20. Lucky Shooter

    Lucky Shooter Gold $$ Contributor

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    312B-15

    In the tool holder for outside surfaces.

    In the tailstock chuck for the bore.

    No problem either way.

    A. Weldy
     

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