I've been reading about finishes for laser engraving. I understand the laser doesn't like dust or contaminants in the air and I've read that spraying gives a better finish than brushing. My problem is I have two buildings. The laser building is climate controlled and the woodworking space is not(central PA). I seems the 2nd space is the logical choice for finishing but temperatures will soon be a problem? I have a 12ft bench, 24" deep, and wonder if a small space heater or heat lamps would be of any help or not? Depending on the weather I could put a larger heater in long enough to spray then move a rack of several pieces the 25 ft to the heated building? Any input will be appreciated!