roll on
Cargo Master
Joined: Apr 2009
Posts: 3,038
Likes: 4
From: South west Idaho
I don't know how small you can go, i have a big 5 h.p. shop compressor. When i am using the gun steady,it keeps the compressor running. My guns all take a lot of CFM, about 30lb.to 35lb. with primer and about 60lb. on finish coat. It varys some depending on the temp. and the product i use. Ones you set the air flow ,you don't want it to drop off as you paint and to small of a compressor may do that. If i were planing to do more paint jobs i would replace my guns with the gravity flow ones that have came on the market in the last few years. I understand they can operate on less air and not have so much overspray, i don't know a lot about them,somebody else can help you on that. 
Tuned
Joined: Mar 2011
Posts: 320
Likes: 0
The biggest one you can afford.
That said, Eastwood sells a spray gun that's engineered to work off lower CFMs than most HVLP guns. It's a bit pricey, but you are going to need good tools if you want a good finish. Here's the link:
EW Concours Paint Gun w/3 tips Plastic&Metal Cup
That said, Eastwood sells a spray gun that's engineered to work off lower CFMs than most HVLP guns. It's a bit pricey, but you are going to need good tools if you want a good finish. Here's the link:
EW Concours Paint Gun w/3 tips Plastic&Metal Cup
Post Fiend
Joined: Jan 2006
Posts: 5,037
Likes: 9
From: Kasson, Minnesota
One thing about buying a larger compressor it that It has so many uses and you'll never be disappointed. You can settle for a used or much cheaper spray gun because you'll have a compressor to keep up. A spray gun is something you probably won't use often and you don't want to buy a really expensive one for just one job. Even talk to body shops who have probably upgraded their equipment and may sell, give or loan you an older spray gun. Here is some good info:
http://www.toolbarn.com/air-compressor-guide.html
But, on a tight budget a better compressor just might be out of range. IMO, even though the basic compressors usually can't keep up with the continuous CFM of paint sprayers, sanders, and blasters, you can do small areas at a time. I painted an old truck a long time ago with about the cheapest stuff you can get and while I had no idea what I was doing the turnout wasn't "bad". Yeah, I had some overspray and underspray and what not, but I still think that even if you were first considering a roll on job, a spray job with cheap equipment will look better than a roll on job.
http://www.toolbarn.com/air-compressor-guide.html
But, on a tight budget a better compressor just might be out of range. IMO, even though the basic compressors usually can't keep up with the continuous CFM of paint sprayers, sanders, and blasters, you can do small areas at a time. I painted an old truck a long time ago with about the cheapest stuff you can get and while I had no idea what I was doing the turnout wasn't "bad". Yeah, I had some overspray and underspray and what not, but I still think that even if you were first considering a roll on job, a spray job with cheap equipment will look better than a roll on job.
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