I just tried to make Rock with Oyster Shell, but it never seemed to stick enough to make a ball. I tried 4 part Oyster 1 part Type 10 cement, I tried it 3 parts to 1 cement, but it seems the oyster shell maybe in to big of particals. It did hold up alittle so I will let it sit in the molds for the few next days and see what happends.
Did anyone else seem to have this happen with them?
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