Someone recently asked me questions through an email about sandcarving equipment and I thought I would post the discussion here in case it would help anyone. Lets continue the discussion and leave a comment below.
I was needing to know what equipment and materials I need to work with small rock. Sandcarving rock, etching glass and any other ideas you might have.
No problem. One of the most important things you need is a pressure pot sandblaster because it is able to blast at higher pressures needed to carve.
Then you need an abrasive that is about as hard or harder than the rock material. I always use aluminum oxide because you can reuse it over and over again.
The third important thing you need is a sandcarving resist which is thick enough to prevent the abrasive from penetrating through the areas that you don’t want carved. The thickness of a resist depends on how high of a pressure you’re using and the size of your abrasive. Ideal resists would range from 10 mil to 30 mil, but sometimes you can go thinner than that if your abrasive is fine enough.
An ideal abrasive would be around 90 grit to 180 grit. If it was my choice, I would probably prefer about 100 or 120 grit for stone carving and about 180 grit for glass sandcarving.
I hope that helps.
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