After thinking about it all night, I decided that I didn't want to screw around with the electric HVLP. I just wasn't convinced I could get enough flexibility from the hose to be able to get all the angles I needed in my cramped working area. I was so happy with how my $10 purple harbor freight pneumatic HVLP laid down the epoxy, I decided to give a go with the high build. I spent an hour looking at all the compressors I could get locally from Walmart, Lowes, Home Depot, and Harbor Freight. The compressor I've been using back home is a 2HP with 3.8scfm@90psi and 4.6scfm@50psi. The purple gun says it requires 6SCFM@50psi, but I've been running it at 35psi with no problems on epoxy. I decided on a 8 gallon horizontal, 2HP from harbor freight. It was on sale for the exact same price as the electric gun I was taking back, and it was rated at 4.4scfm@90psi, and 5.5scfm@40psi. As a bonus, it was only rated at 13.5Amp@120V, so I could power it off of the shop's power.
I was however worried about powering the lights and fans off of the same 15amp circuit as the compressor, because if I trip the breaker, I have no way to reset it, and I'll be done for a day or two until the owner gets by to flip it back. So I was planning to run my small 1000W generator for them, but while browsing around Harbor Freight looking for HVLP tips I saw a 750w power inverter on sale for $19. I figured I would spend more than $19 on gas at current prices running the generator, so I picked it up:
It ran four fluorescent lights and two 20" box fans no problem.
I wanted to pick up another purple HVLP gun just like mine back home, but the biggest one they had was a 1.5mm tip, and they don't carry extra tips. So instead I picked up this thing, which has approximately a 2.1mm tip:
I also hooked up an inline desecator right at the compressor, and the small moisture trap in the line right before the gun:
I have to say, I'm impressed with the little compressor. It is not oil free, but the oil free ones always seem to be rated about 30% less SCFM that the oil ones, so I'm willing to make that trade off. it is also very very quiet. I was shocked at how quiet it was.
While I was really impressed with the compressor, I was mortified at how horrible the gun was. I knew a siphon gun would use more SCFM than the gravity feed, plus I was spraying a thicker material, but I couldn't get the stuff to hardly move at all. Even cut 4:1:0.5 with reducer, I had to run at the max PSI rating of the gun (55) and have the flow adjustment wide open to get a small 1" spray pattern. Even then it would sputter on me occasionally. The literature stated 4SCFM@50psi, which the compressor supported, but I think the gun probably needed close to 12SCFM@50psi.
Painting was so slow, it took me over an hour just to do the underside of the hood, the edges of the inside doors, the door jambs, and the backsides of the fenders:
So as much as it pains me, I've decided I will have to wait until next week to spray the body in hi build. It is going to set me back a few days on my really tight schedule, but it is better than screwing things up. Not only will I be able to order a gun that will work, but as a bonus, it is getting up into the 60's early next week.
I looked through the first ten pages of results for HLVP on amazon, and then clicked on every gun that had a 1.8 or bigger tip. Then I looked at every gravity feed that was rated at less than 5SCFM@50psi. I looked through all the reviews until I found some that had intelligent comments, and decided on a Neiko 2.0 HLVP. I've never heard of it, but it had great reviews for spray ability, even with latex paint, which should be about the same thickness as the high build. I don't know how durable it will be, but I only need to use it once or twice.