We do high dollar restorations here, as such we shoot 'em with SEMS 39144 straight, independent of instructions to reduce 1:1. It looks richer if you will, shooting it straight. 10-12 psi at the cap with HVLP [high velocity low pressure]. 20-25 NON-HVLP. Shoot 2-3 coats at medium to heavy, no runs no sags no errors using a 1.2-1.4 fluid tip. To repeat in English, go buy a cheap jam gun at Harbor Freight, fill it with SEMS & go have fun.