[Jewelry making - Article 00115] - Re: [Orchid] Square Rings Sizes

[Peter W . Rowe]

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>     Make a paper ring mandrill. Take a piece of copier paper (about 20
>     lb should be good) and wrap it around the ring mandrill a few
>     times. Tape it in a couple places so it holds together. Now take
>     your ring sizers and slide them on one at a time and mark the sizes
>     on your paper mandrill. Your paper mandrill can now be slid into
>     almost any shape ring to determine what size it is. 

    Sounds like a post I wrote a number of years ago, though others may
    also have describe this. Works about as well as anything, and paper
    mandrels are easy to make up as needed. The one addition to this is
    the caution that while this translates the inside circumference well,
    and for many modified shapes this suffices, often a non round ring
    will just feel a bit different even when matched in theoretical size.
    So after using the paper mandrel to ESTIMATE the needed information,
    use your ultimate ring mandrels and sizing tools. Your own fingers.
    You've got ten of them, each with two knuckles, so you've an
    assortment of spots to test a ring size. Try the desired size with a
    standard round sizer to determine what the customer would like the
    right size to feel like. Then check to see if your estimated non
    round size feels the same. It's quite hard to be more accurate than
    that, ie a chart of adjustments, since different degrees of "square"
    feel different. But you'll have come close with the paper mandrel,
    so adjustments after that are likely to be small. 

Peter Rowe
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