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Urethane Enamel mixed with Lacquer Thinner?


tr8er

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Folks, what would happen if you were to mix Urethane enamel with the correct hardener, and Lacquer thinner in place of the correct reducer.  

 

Urethane Enamel (4) 

Reducer  Lacquer Thinner (2)

Hardener (1)

 

My local paint shop filled an old reducer can with Lacquer Thinner and I forgot about the re-used can until I sprayed some spots.  Didn't do the exterior luckily.  

 

What would you expect could, or will happen.  

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Lacquer thinner is generally "hotter" or a more potent solvent that enamel reducer, and it generally evaporates faster.  it you did not have a bad reaction, that is the paint doing something weird, like turning to jello, or cottage cheese, you can probably get away with it.

The lacquer thinner will "flash off" quicker, and this may cause the paint to not flow out on the panels like it normally would, resulting in a less than glossy finish, or more orange peel.

If it is a solid color, not metallic, the color should be the same.

If it is not, you might be able to just put another coat of correctly reduced paint on the paint you just applied.  This is if you are still in the "recoat window".  If you have too much time beyond the recoat window, let the new paint go for 90 days, do not wax it, and after 90 days, treat it like a good old finish, sand with 400 grit, or whatever is recommended by the paint you are using, and recoat it again.

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