Example Amount of RTV Moldmaking
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| Measure Mold Cubic Inches: Length X Width X Height If your mold is 10″ X 6″ X 2″ = 120″ cubic ins Measure Your Part Your Part is 9″ X 5″ X 1.5″ = 67.5 cubic ins |
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| Take your mold cubic inches | 120″ cu in |
| Less your part cubic inches | – 67.5 cu in |
| This gives you | 52.5 cu in |
| There are approx 21 grams per cubic inch (453 grams per 1 lb) | x 21 grams |
| Total: | 1,102.5 grams of RTV needed |
| divide by grams per lb | div by 453 grams per lb |
| silicone needed | 2.44 lbs |
| 2.44 lbs silicone needed | |
Amount of Polyurethane
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| Measure Your Part: Your Part is 4″ X 5″ X 3″ = 60 cubic ins | |
| Take your mold cubic inches | 60 cu in |
| There is approximately .550 ounces in one cubic inch of MPK-70 casting Resin | x .550 ounces |
| Total: | 33 oz of material |
33 oz resin needed
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