Mace, Your 6 cfm compressor should have no problem at all supplying your spot gun. There are much more effective materials to use for coils in ice water - like steel or copper - rather than an insulating rubber hose. But they would typically cost more. However, the basic concept is sound and could be implemented with hose if for no other reason than because it's "better than nothing". I'd keep the hose coil upstream of your regulator though because frictional pressure drops are less at the higher line pressure. I assume by "pretty close" you mean actually in your spray area. If your drive motor is a TEFC one, you shouldn't have a problem. If it's an open type however (and it probably is), it would be unacceptable in any kind of commercial operation where an actual explosion proof system (including lighting) would be required by regulation. Most DIYs are not going to be too concerned with it, instead relying on the fact that, most probably, the concentration of solvent vapors will be significantly less than any lower explosive limit. I can't say that I have heard of any DIY getting blown up by painting his car in his garage. I stopped painting inside years ago when I observed the quantity of overspray buildup in open windings of the motors on both my compressor and my exhaust fans. But I was painting entire cars with high volume equipment in a relatively small area. You'll be evaporating solvents at a relatively low rate (spot gun) and if your area is relatively large your risk should be very low, especially if you have exhaust fans in use. With a spot gun, I'd be more concerned with proper respiratory protection than being blown up. However, locating your compressor outside (or otherwise isolated as much as practical from) your spray area on a temporary basis, would be a prudent course of action. Rod
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