30 Pounds Petrobond Sand an Affordable Delft Clay Alternative for Precious Metal Casting

$ 43.06

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This sand packs very easily and holds its shape well, letting you cast details easily. With high temperature materials like copper and brass, it catches on fire and the adhering material burns. You just need to scrape out the layer that burned. You lose a few ounces per use, which I see as completely acceptable.For the price, especially with free shipping, give it a try!
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