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The model is covered with about 3" inches of sand. |
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Molten zinc is quickly poured. We like to cover the sprue with sand after the pour to cut down on the smell. Both my shop doors are open during the melting, pouring and shakeout since zinc fumes aren't healthy. |
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The rough casting. |
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There's about an inch more metal than is needed for the knob stub. |
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