Here’s how to change the needle, nozzle, and/or air cap on your spray gun for wood finishing applications. 1. Remove the fluid knob at the rear of your spray gun. 2. Remove the needle spring.

This Astro spray gun has a 1.8-millimeter nozzle, adjustable fan, and 1-quart capacity dripless cup. It can spray a variety of paints and lacquers, including primers and topcoats, at various ...