Can you spray poly with good results?

Hi,
Just wondering if it's possible to spray oil-based poly with a good air-type sprayer (not HVLP either), and not get a bunch of bubbles in your finish?
Any tips or experience here? Yes, I know, everyone should have an HVLP and an airless sprayer, but let's just assume that I don't.
Thanks, DK
"If you can't beat them, arrange to have them beaten." ---George Carlin
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No problem. Thin 10% - !5%, and go for it. Use a good respirator, good light, not below 50 degrees F.
--
Jim in NC



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yeah, I've done it several times with no prob. Like Jim says, watch the temp, make sure you have eye protection and a good respirator and most importantly.... if you do this stuff in the garage like alot of us do, make sure the car isn't parked right in front of the garage door. Kinda self critiquing, and makes a hell of a mess on a car when the overspray settles.
good luck! George

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With the proper needle/nozzle combination and the right viscosity you can successfully spray any liquid.
The two biggest thing to keep in mind if you are spraying an oil based varnish (especially with a conventional system) is that varnish stays in tack for quite some time. This means any overspray and bounce back is going to stick on to anything it touches.
That brings us to the second thing. Unlike shellac and lacquer, varnish doesn't have a solvent. Once it cures nothing but some high test strippers is going to get it off. Messy and possibly destructive for things that get hit by the overspray and bounce back. What the military would call collateral damage. That little problem also means that you not only have to be careful of things in the spraying area but you MUST clean the gun if you are not going to be spraying for even a short period of time. The varnish in the cup may not be a danger for some time but that thin coating on the internal passages of the gun and feed tube is a different story.
Good luck
--
Mike G.
Heirloom Woods
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