[Jewelry making - Article 00743] - Re: [Orchid] Hammering Finish

[andy cooperman]

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    I have one of those hollow rubber mandrels and I love it. Gave one
    away to a workshop host who was really taken with it and found it
    very tough to replace it-- haven't found another yet. 

    Before I came upon this tool, however, I was taught a method that
    works quite well. 

    Cut a strip of thin paper the width or wider of the overall width
    (nail to knuckle) of the ring. (Gestimate its length so that it will
    fit inside the ring w/ a bit extra.) 

    Roughly form this into a cylinder and telescope it inside of the
    ring, creating a liner. Carefully push this firmly against the inside
    of the shank so there are no gaps, but be sure to cleave only to the
    inside of the ring itself: don't follow any hollowed out areas like
    you may find on a large domed or signet ring. 

    Mark where the overlap is and remove the strip. Cut at the mark and
    tape the two ends together on the outside of the loop (like making a
    butt seam). Now slide this over the ring mandrel and find the size.
    Because the paper is so thin and has such little dimension, the
    measurement on the outside of the paper "ring"-- which is the inside
    of the real ring--- is transferred to the inside of the paper ring
    and then to the mandrel, with little distortion in measurement. I use
    notebook or light weight printer paper. 

Hope this helps,
Andy Cooperman
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