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Aug3-07, 05:08 PM
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You don't need pure sulfur to cast objects. I would use sulfur used to produce the caps on concrete cylinders used to test compressive strength. They sell the bagged version of this stuff ( at Durhamgeo. SoilTest has their own brand. It will work fine for casting with the filler in it. It comes in various colors but not bright yellow. I assume that the color is a secondary concern?