slate chalkboard

Old 05-09-01, 05:19 PM
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I have an old chalkboard, am pretty sure it is slate. i want to clean it up (there are a few embedded chalk marks on it) and polish it. it is black. any tips would be greatly appreciated!!
Old 05-10-01, 01:51 AM
Join Date: Mar 2000
Location: Lake Murray, SC USA
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Try cleaning it with one cup of household ammonia in one gallon of warm water.

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