[Jewelry making - Article 00256] - Re: [Orchid] Mystery from a jeweler's estate

[David L. Huffman]

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Hello Jeanne;

>     wondering if anyone could identify them for me? I have pictures of
>     them at http://www.jeannius.com/triangle.htm 

    Those are carbide lathe bits. They are held in a fixture mounted on
    the traversing part of a lathe and used for cutting hard metals. They
    are noticeably dense, aren't they? Probably the jeweler that had them
    was using them for the same thing I used to use one for. They are
    excellent for shaping all sorts of abrasive wheels. I used them to
    dress and shape mizzy wheels, aluminum oxide cut-off disks, abrasive
    impregnated rubber wheels, etc. Just run the wheels fairly fast
    against one of the sharp edges of the carbide, the wheel will wear
    down and the carbide won't. Very handy. 

David L. Huffman

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