Thread: Got Grit?
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Old 06-11-2018, 07:36 PM
Peter Bowles Peter Bowles is offline
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The thing you are looking for is an Elutriator.
In its most simple form its a container with a water feed to the bottom with variable and measurable water flow. The mixed grit goes in, the water gets set to a value, and the less dense material gets carried away over the top to a second container. Different water flows will float different size particles over the rim. That's the theory.
I've read on a couple of lapidary sites this done with greater of lesser degree of success, but those old boys have different tolerances to us and they do like to eek every morsel out of anything they have to purchase.
You would never really know what particle size you were getting, so perhaps only useful for separating away the larger unused grit.
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