Michael Dresdner

straight talk about wood finishing

Cleanup in aisle two

Q: I’m using a water based urethane acrylic lacquer. Can I leave the stuff it in the spray gun (HVLP) in between coats, or do I have to clean the gun every time?
A: Most waterbased finish clog gun tips sooner than you would expect, and cleaning the gun can be very troublesome if the finish does set up in it. I prefer to empty the gun and at least blow clean water through it right after spraying. It’s fast, cheap and is good insurance. I’d do a more thorough cleaning once you are done spraying for the day.