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Graffiti at WKLB.
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Littlestone
Littlestone
5386 posts

Re: Graffiti at WKLB.
Mar 31, 2005, 13:57
You're kinda both right (you and FW).

A lot depends on the support (the surface to which a pigment or paint is applied such as canvas, paper, silk etc ). Chalk on a blackboard is going to wash off fairly easily because the blackboard's relatively smooth. Chalk on a sarsen stone is going to be more difficult to remove because it's been deposited in the micro cavities of a much rougher surface.

Fortunately chalk has little or no binder (an oil or animal protein etc which is used to bond the pigment together to form a paint) so solvents would not generally be required.
In reply to:
Re: Graffiti at WKLB. (LancsLass)
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