I am repainting all my architraves and need to know of the previous paint is oil based.

If it is oil based paint then I need to sand and prime. If it is water based, then I only need to lightly sand to take off the gloss.

The exsiting paint is glossy, but I don't know how to tell whether it is oil based or not.

So, how do I tell if something has been painted using oil based paint?


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