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Thread: Find Top Dead Center of a Hemisphere

  1. #51
    Join Date
    Jan 2008
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    Richmond, Virginia
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    Re: Find Top Dead Center of a Hemisphere

    Quote Originally Posted by N2 Welding View Post
    So many ways to skin this cat. Now I think I have to go get an el cheapo combo square kit from HF. Would like a Starrit but Iím too poor.
    If you want a quality combo square at a reasonable price, check out Harry Epstein Co. They have "blem" squares made by PEC in the USA.

    https://www.harryepstein.com/catalog.../result/?q=pec

    https://pec.tools/
    Last edited by Oldendum; 2 Weeks Ago at 10:26 AM.
    "USMCPOP" First-born son: KIA Iraq 1/26/05
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    SP-175 +
    Firepower TIG 160S (gave the TA 161 STL to the son)
    Lincwelder AC180C (1952)
    Victor & Smith O/A torches
    Miller spot welder

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  3. #52
    Join Date
    Apr 2016
    Location
    CA
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    Re: Find Top Dead Center of a Hemisphere

    Thank you Od. I've never head of PEC prior to this. A little research shows precision measuring tools etc.
    Lincoln, ESAB, Thermal Dynamics, Victor, Miller, Dewalt, Makita, Kalamzoo. Hand tools, power tools, welding and cutting tools.

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  5. #53
    Join Date
    Oct 2014
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    866
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    Re: Find Top Dead Center of a Hemisphere

    Measure OD with caliper. Split the difference and use the sharp tips of caliper to scribe in from the edges 3-4 directions and easy to place tip of small bit centered on your marks or prick punch it and center bit in it.

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