Join Date: Jul 2008
Location: Full time cruising on my boat. Currently on the Tenn. River in NW Alabama in Jo
I usually spray lacquer at about 45 PSI at the compressor end. I use a 50' hose. If you have a longer hose, you will need more pressure.
This also depends on the lacquer you buy and the amount of thinner you add. Different manufacturers have different % solids.
Use 45 PSI as a starting point. Make your first pass (on a scrap of plywood) at a normal speed and look for a nice wet coat but not flooded. Then adjust pressure up or down.
Also check the specs on your compressor. Usually a 30 Gal, 2 HP does not have enough CFM for spraying. The gun manual should tell you how much CFM is needed. If the gun specs and the compressor specs are close, you may be able to get 2 passes on a small table top before the pressure drops below the useful value.
Retired woodworker, amongst other things, and now full time cruising the waterways on my boat.