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Units of Measure:
31.1 Grams = 1 Troy ounce
20 Pennyweight (dwt) = 1 Troy ounce
.91 Troy ounce = 1 Avoir. Ounce
14.583 Troy ounces = 1 Avoir. Lb.
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Conversions:
Brass weight x 1.25 = Sterling Silver weight
Brass weight x 1.50 = 14 Karat Gold weight
Sterling Silver x 1.26 = 14 Karat Gold weight
Wax weight x 10.0 = Brass/Bronze weight
Wax weight x 10.5 = Sterling Silver weight
Wax weight x 12.0 = !0 Karat Gold weight
Wax weight x 13.5 = 14 Karat Gold weight
Wax weight x 15.0 = 18 Karat Gold weight
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Mold Sizes:
Rubber molds:
Minimum 2" x 3" x 3/4"
Maximum 6" x 10" x 3"
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Castings:
Minimum size 1mm
Maximum 5" x 12" x 4"
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Metals Available:
Gold - In-stock or you can supply your own
Sterling Silver - In-stock or you can supply your own
Brass - Yellow Most popular metal-high polish
Silicon Brass Wire - designs, free flowing
Bronze - Sculptures
Jewelers Bronze Silver - color-has limited usage
Beryllium Copper - Machine parts
Aluminum - Light weight
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Models for Molding:
Most materials that can withstand 400 degrees F can be used as
models for rubber molds
Sterling Silver - Good Easy to repair, retains shape for
multiple molds
Brass - Fair Retains shape, harder to repair than Sterling
Silver, has a build up after multiple molds
White metal/Lead - Poor Could melt and distort, not advised
for multiple molds
Reproductions are 5% smaller than the original model
Minimum thickness: .040/#18 AWG (Gauge)
Models should be fine sanded rather than high polish
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