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Old 11-13-2019, 10:38 AM   #20
rotorwrench
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Join Date: Jun 2010
Location: San Antonio, Texas
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Default Re: Painting Over Water !!!!!!!!!!!

MEK is not as good as plain old methanol at drying a wet surface. Blow the surface off with compressed air and us a prep sol or wax & grease remover product. It will be dry of all solvents after 15 minutes or so. Blow it off again to remove any other contaminants. MEK drys fast but it's too expensive to use as a solvent for anything other than fiberglass resin or sealants where nothing else will work as well. Lacquer thinner is also good for removing water and crud since it also has some alcohol in it but breathing any of these more volatile fluids will knock you down. They absorb through the skin faster too so wear gloves or limit your exposure.

Just to add. I looked up several wax & grease removers and most all of them contain from light to heavy hydrotreated Naphtha as the main ingredient. From there, the lesser ingredients vary but isopropyl alcohol, mixed xylenes, toluene, ethyl benzene, cumene, and 1,2,4- Trimethyl benzene in trace quantities could be in there.

Prep-sol 3919S was a trade product of Dupont but is now under the Axalta banner so it's till out there but there are a lot of others. Most all go under wax and grease remover description. I just call them all prep-sol.

Last edited by rotorwrench; 11-13-2019 at 11:33 AM.
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