We use the oil filled radiator type heaters in our booth during winter, they are completely enclosed and don't provide any ignition source. Downside to them is since they are radiator type heaters they don't heat the space quickly. They do however heat an enclosed space well. Other problem you will have with evacuating air is you'll also be evacuating your heat. If we had to finish in really cold temps I'd just heat the booth and leave the fans off. You have to wear a good full face respirator to do this. Booth fans would evacuate the heat in about 30 secs and we didn't have a heated make up air unit.You will want to be really careful using a fan to evacuate the air in the shop, most paint fumes are heavier than air and will sink. If you have a fan at floor level, your asking for trouble. If you don't have an explosion proof fan, I wouldn't use a fan to evacuate fumes. You'd be safer using natural ventilation and a heater with no ignition sources. As soon as your done spraying i'd just close up the garage and let her cure. Fumes wont hurt anything as long as your not in there.
Bob,That happened to me in college, but I would end up at 7 Eleven eating doritos, beef jerkey, and combos having no idea how I got there. My main concern was shooting paint when the temp was low, for the few minutes when the heat wasn't cranked. I didn't know if this would effect how the paint would stick or run.....sounds like it will be OK. We'll see. My main concern is not blowing up our brand new home.I wonder if the electric oil heaters would keep my garage warm? On a side note, I have my engine cowl in my garage.....one side of the engine decals are so f'ed up that even with a heat gun the decals just come of in tiny-tiny pieces, and easier way to get that crap off?
Get one of the stripe eraser wheels for your drill. They remove the letters and the glue without hurting the paint. http://buyaes.com/rubber-pinstripe-eraser-pad.html