Michael Dresdner

straight talk about wood finishing

Q: I am finishing alder with Daly’s Benite and CrystalFin, spraying with a Fuji gun and #55 needle. I have been using water damp cloths as tack rags. I am getting white spots in the dried finish. Most areas are fine, but some of the areas look like white overspray. The spots are down in the cured finish. I did not apply a sealer. Could this be an issue?
A: Probably not. The most common cause of white in waterbased coatings comes from applying it too heavily, or working in conditions where the water does not have time to evaporate before the finish starts to cure. Try spraying thinner coats, work on days when the humidity is low, or add a slowing solvent to the finish.