General
Airless vs HEA
Various techniques are used in paint spraying. One of the most famous is the Airless technique. Airless literally means without air because (as many people think) it produces very little overspray. In fact, the paint is forced under pressure through a small hole (spray tip), so an airless sprayer is not actually airless.
Staining wood? Use a paint sprayer
The best way to use a paint sprayer for staining wood and also, which devices are the best?