Slate dishes for borax grinding - Jewelry Discussion ...
Just wondering- is there any reason one can't use an unglazed ceramic dish for grinding the borax cone, instead of slate, if it's so hard for some to find? I can't help thinking one might get slate dust in the dissolved borax. I've been using powdered borax mixed with water for some time now. When it dries up in the little dish (like overnight), I just add a few drops of water, and ...