Hello Peter! I am not sure how they would work, The viscosity of auto paints are different that our wood finish. The guns can also be pretty grumpy things, If the material Your spraying isn't just right, it will not spray. Coming from the auto industry, We tried many different professional guns, and only a few guns would lay out a finish that wasnt runny, or full of orange peel. Taking what I have experienced with the guns almost 10 years ago, I would make sure that if it didn't work to Your satisifation, You would return it. That is how i would approach it.
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