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Spraying polyurethane varnish

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Forum topic by ashahidan posted 288 days ago 483 views 0 times favorited 1 reply Add to Favorites Watch
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ashahidan

64 posts in 1735 days


288 days ago

Dear friends,

i am going to spray a table with clear polyurethane varnish. I will be using a compress air sprayer.

I have bought a a liter of ICI polyurethane varnish and there is no instruction to show how much thinner I should add to the varnish before spraying.The instruction only says I should add 20% thinner for the first coat if I were to use a brush. And that is all.

Please let me know how much thinner I should mix with the varnish .

ashahidan

-- asm


1 reply so far

View Fred Hargis's profile

Fred Hargis

1742 posts in 1130 days


#1 posted 288 days ago

That’s not a straight forward answer. It depends on the gun itself, and the size of the opening in the needle set as well as air pressures and several other things. What I suggest is to start at a low level, and test it it. If it doesn’t spray smoothly, increase the thinner slightly and try again.

-- Our village hasn't lost it's idiot, we sent 'em to Washington.

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