[Jewelry making - Article 00312] - Re: [Orchid] Making Micro mosaics

[Robert Powell]

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    Ring blanks and inside diameter 

    Dear Karen, 

>          Let's say I have a strip of metal that is 1mm thick and
>     precisely 1" long.    If I form that into a circle, which
>     circumference is precisely 1" - the outside, the inside, or the
>     mid-point between the two?  In other terms, does the outside
>     surface "stretch" or does the inside surface "compress" when
>     forming the circle? 

    The solution to that question is in the book PROFESSIONAL
    GOLDSMITHING by Alan Revere . ISBN 0-442-23898-3 TO ORDER - call -
    800-844-9442 

    On pages 208 - 209 in the appendices there is a very comprehensive
    table which shows the relationship between the ring size needed and
    the flat length of the ring stock as determined by the thickness of
    the ring stock. The appendices alone are worth the price of the
    book. 

    The outside stretches and the inside compresses so the thicker the
    ring stock, the longer the flat length the ring stock needs to be
    cut. 

    The Book is well written, well illustrated, and well bound . It is a
    very good value . I most highly recommend it. A standard disclaimer. 

ROBB


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