polyurethane and varnish from
compressor. My question is how can I spray finishes such as
polyurethane and varnish from it. I tried poly and it's just to
thick to work. Am I using the wrong stuff or is there s posted by M Fortney on May 10, 2000 at 23:03:26:
the problem could be air pressure, or clogged tip, or orifice size, or any number of things. But I think the simplest answer is the most likely. You said it yourself:"its just too thick to work". Thin the material.