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  1. #1
    Join Date
    Mar 2008
    Location
    Townsville, Nth Qld
    Posts
    102

    Default Solvent for hardened waterbased acrylic paint

    Hello, I dug out my little Earlex HVLP spray outfit, only to find the test spray pattern with turps on cardboard was not too great, seemed to be a hollow in the centre of the fan pattern, and the fan pattern was curved instead of straight up and down .

    I previously used it with waterbased acrylic paint 6 months ago, and the jets and air passage ways need cleaning, as shown below.

    Can anyone please advise me how best to do this? Is there a solvent that will get rid of the hardened gunk?
    regards,

    Dengy

  2. #2
    Join Date
    Aug 2005
    Location
    Queensland
    Posts
    613

    Default

    Water based paint can be softened/removed with methylated spirits. You may need to soak it for a while and give it a scrub with a hard toothbrush but it should be successful.

    Regards,
    Bob

  3. #3
    Join Date
    Jul 2006
    Location
    Port Huon
    Posts
    373

    Default

    You could try a brush restoring liquid (Poly brand)
    . Softens most paints to the point where a toothbrush can be used to clean up.

  4. #4
    Join Date
    Feb 2009
    Location
    Bristol, UK
    Age
    66
    Posts
    0

    Default

    Many years ago I had a similar problem and found the best stuff to remove acryic paint was Trichloroethane or Percalone - particularly nasty CFCs (as is now known).

    However they were sold as Dry Cleaning fluids, so it might be worth trying whatever you can get now for dry cleaning.
    Dragonfly
    No-one suspects the dragonfly!

  5. #5
    Join Date
    Mar 2011
    Location
    New Zealand
    Posts
    16

    Default

    You could also try soaking it in lacquer thinner.

  6. #6
    Join Date
    Sep 2002
    Location
    Minbun, FNQ, Australia
    Age
    66
    Posts
    1

    Default

    Heat.... not so much that you melt the parts you want to keep.
    Cliff.
    If you find a post of mine that is missing a pic that you'd like to see, let me know & I'll see if I can find a copy.

  7. #7
    Join Date
    Mar 2008
    Location
    Townsville, Nth Qld
    Posts
    102

    Default

    Many thanks for all your suggestions. Ended up soaking in Prepsol thinners, and that did the trick. Still needed a little effort with a toothpick scraping some of it from the air passages, but it worked
    regards,

    Dengy

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