To determine whether the surface you are painting has an oil based or a water based paint coating on it, wet a cotton ball with methylated spirits and rub it over the surface. If the paint is removed, it is a water based.
To determine whether the surface you are painting has an oil based or a water based paint coating on it, wet a cotton ball with methylated spirits and rub it over the surface. If the paint is removed, it is a water based.
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