[Jewelry making - Article 00451] - Re: [Orchid] Filigree frame wire calculation

[Dave Arens]

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Hi Peter,

>     The frame wire is roughly 0.68 mm thick (28/1000") and 2.06 mm
>     wide (83/1000"). How would one calculate the original round gauge
>     required? 

    Here's one way to do it. It helps to have a calculator that can do
    square roots. 

    1. Find the area of the wire as it exists now. .023 x.083 =.001909
    square inches. 

    Find the dimensions of a circle with this area (pi x radius squared
    = area). 

    2. .001909 divided by pi (3.14) = .000607654 (radius squared) 

    square root of .000607654 = .02465063 radius of wire with an area of
    .001909 square inches 

    3. 2 x.02465063 (the radius) = .049301261 (diameter of a wire with an
    area of.001909 square inches). 

    4. Compare the wire diameter .049, to a chart of wire gage 
dimensions.
    .049 falls between 17 ga (.045) & 16 gage (.051). 

Dave
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