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How to identify oil paint?

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  1. #1
    1K Club Member Gooner's Avatar
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    Question How to identify oil paint?

    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?
    I'm no expert, but know enough to be dangerous...
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  2. #2
    Seasoned DIY droog's Avatar
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    I believe if it is acrylic and you wipe it with metho then some of the color will come of on the rag, enamel wont.

    Regards dave.

  3. #3
    1K Club Member Gooner's Avatar
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    On gloss paint?
    I'm no expert, but know enough to be dangerous...
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  4. #4
    Senior Member Batpig's Avatar
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    Dear Gooner,

    Droog's method of detecting Acrylic is the probably the only thing you can do, because I've never heard of a way of detecting Enamel (as in Oil-Based...).

    Two things worth adding though:
    1) If she happens to be peeling anywhere (like a thick brittle peel), you can be fairly sure it's Enamel.
    2) Use a dark-coloured cloth when you're rubbing the Metho on for the Acrylic-test.

    Good Luck,
    Batpig.

  5. #5
    1K Club Member Gooner's Avatar
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    Thanks for the suggestion. I grabbed a pair of the Mrs old black underwear and tried it out. Small white stain after rubbing it with metho on the architraves so I assume acrylic.

    (hmmm.. white stains on the Mrs underwear.. I'm sure there's a joke in that somewhere.)
    I'm no expert, but know enough to be dangerous...
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  6. #6
    rrobor
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    Hey Gooner, you recon its shades of Bill Clinton?

  7. #7
    Senior Member Jacksin's Avatar
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    Was the white stain paint or the black colouring of the material bleaching out?
    Jack


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