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Round square insert (?)

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  • Round square insert (?)

    Someone recently told me how he makes his between-centers boring bars. It sounded like a good way to do it, but I can't remember the name he gave to the insert he used. Perhaps someone can help and suggest a source.

    He described it as a sleeve that has a square hole through the middle to accept a cutting tool. He drills a hole in a stout piece of round stock and silver-solders the sleeve in place. Apparently, it also has threads on one end for adjusting the protrusion of the cutting tool.

    Does this description ring a bell with anyone? If so, can anyone suggest a source?

    Thank you.

    Orrin
    So many projects. So little time.

  • #2
    The operation is called line boring. I have never seen the cutting tool, but I'm sure if you have a bit of ingenuity you can come up with something. Do a search for line boring, and see what you come up with. Good luck.
    Arbo & Thor (The Junkyard Dog)

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    • #3
      Orrin, a while back Vmil3 posted on Cutting Keyways with a shaper. The inserts are described there.
      http://bbs.homeshopmachinist.net//Fo...ML/010643.html

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      • #4
        Orrin,

        Look about halfway down this page, right side. I think this is what you want (Low Carbon Steel Square Hole Tool Bit Sleeves):

        http://www1.mscdirect.com/CGI/NNPDFF?PMPAGE=534

        ------------------
        Barry Milton
        Barry Milton

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        • #5
          I think Reid Tool Supply sells the sleeves, too. www.reidtool.com

          I'd probably install one using Loctite 609.

          [This message has been edited by SGW (edited 03-31-2005).]
          ----------
          Try to make a living, not a killing. -- Utah Phillips
          Don't believe everything you know. -- Bumper sticker
          Everybody is ignorant, only on different subjects. -- Will Rogers
          There are lots of people who mistake their imagination for their memory. - Josh Billings
          Law of Logical Argument - Anything is possible if you don't know what you are talking about.
          Don't own anything you have to feed or paint. - Hood River Blackie

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          • #6
            Thank you All for the help. I appreciate it.

            The next time I get a tip from someone I'll write down all the particulars. (But then I'd probably lose the piece of paper. ;-)

            Best regards,

            Orrin

            So many projects. So little time.

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