I still use a De Vilbis JGA 502 that I've had for close to 40 years now- just painted a friend's buggy with it 2(?) weeks ago, shooting a 2 component urethane. I tried something a little different and got the best finish yet with that type of material- this is in a mutual friend's garage/workshop. I mixed different thinners for the 2nd and final coats. We wet down the floor a little bit to keep the fan (and me while moving around) from stirring up dust.