Slate Blackboard

oceangirlmeNovember 4, 2008

I have an old slate blackboard that used to be found in schools. There is a stain that looks like it was some sort of white liquid. Any suggestions on how to attempt to clean this? I don't want to damage the slate. Thanks.

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Soap and water is a good starting place.
Linda C

    Bookmark   November 5, 2008 at 8:29PM
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Oxiclean and water was used with a 3M pad. The stain is still there which is why I am looking for ideas for the next step. Thanks.

    Bookmark   November 6, 2008 at 9:21PM
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Do you know what caused the white stain?

    Bookmark   November 6, 2008 at 10:07PM
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Is it obviously a "stain". Slate comes in several colors and the sources of slate may have mixed colors. Could this be a natural discoloration?

    Bookmark   November 7, 2008 at 11:42AM
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I don't know what caused the stain. The blackboard came from my Aunt's estate. The stain looked like something dripped on it - it's definitely not natural to the slate. Thanks.

    Bookmark   November 8, 2008 at 9:13PM
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