Using Waterborne Finishes
Products keep getting better, but they require special preparation and application
Synopsis: Andy Charron, author of a book on spray finishing, figured out a way to apply even coats of waterborne lacquers that are smooth and free of defects, whether using sprayers or pads and brushes. In this article, he explains the less obvious ways waterborne finishes differ from solvent-based finishes. Then he explains how to apply them, starting with preparing the surface, ensuring that the finishing products are compatible, and then thoroughly mixing and straining the finishing materials. He covers spray and brush application methods and talks about how weather conditions will affect the finish.
Before I owned any spray equipment, I used brushes or rags to apply solvent-based finishes. When I finally purchased a spray gun, I had a limited amount of money and very little shop space, so I could not set up a proper spray booth. I sought out finishes that were nonflammable and relatively safe to…