carloscinco
fully equipped rock polisher
Member since July 2008
Posts: 1,639
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Post by carloscinco on Sept 9, 2008 21:18:11 GMT -5
10% of the rocks I've been picking up in urban or industrial settings have cement on them. I can knock the stuff off that is on a smooth surface but it can find it's way into pits and crannys. Is there a product I could pick up in a hardware store that would remove cement without dissolving agate or jasper? Lookin' for an easy way out of chipping it out with sharpened pointed nails. Thanks, Carlos
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Post by deb193redux on Sept 9, 2008 21:22:06 GMT -5
you don't want the cranny anyway, so just tumble it out
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carloscinco
fully equipped rock polisher
Member since July 2008
Posts: 1,639
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Post by carloscinco on Sept 9, 2008 21:34:53 GMT -5
Boy! Talk about "Don't sweat the small stuff" being the answer once again. Thanks for the help, both technical and philosophical.
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Post by LCARS on Sept 10, 2008 12:25:31 GMT -5
muriatic acid
It is used in low concentrations and short exposures to "clean" concrete. In higher concentrations for longer exposures it can dissolve limestone and most concrete or at least soften it up enough to tumble it out quickly.
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