Tommy
Good questions, and I know you know Todd and I well enough to know that we batted that around for weeks...maybe months as we watched that room get built. In the context of a 10k sf paint grade home, THAT was the last room finished. The lollapalooza.
It was mostly about time.
We had the 395 parked on that job for almost a year, as you probably saw, doing all of the primer and paint grade. And at the time of the study being gel stained, the 395 was still parked in the basement shooting up the first floor doors.
The fundamental decision came down to just a few things. We knew we would shoot ultramax as the clear. We knew we could convert the 395 to pristine clear grade form in a couple of hours. (you know the drill). We would have had to really do a dental hygiene job on it to trust it in clear in that room, but we could.
We have run ultramax in it before, and we have run ultramax in hvlp. In the context of a finished home, we felt that we would get alot less airborne mist with the hvlp at like 3.5 psi compared to the 395 which would have probably needed to be at about 600. The amount of turbulence at the tip would have been greater, which would have meant our masking would have to be more aggressive. We had to tape and mask the floors and the drywall ceiling square perimeters in the coffers, as well as the windows. We were mostly concerned about tearing up the ceiling by heavier masking. When we chose to go hvlp, we were able to use the yellow tape (frog and intertape) and we ended up having no blowouts. Plus, the superior fan size control on the hvlp would be very handy in all the cabinet corners. With the aaa you got what you got, and you fly through the cab carcasses and hope it hangs.
What drove the final decision was quantity. We knew it would take less than two gallons to do the room with hvlp, whereas with aaa we would have been between 2-3 (@$60+/). Plus the additional cleanup time of the pump, hose and gun versus the simple breakdown and cleanup of the apollo. Todd has that down to about the 8 minute mark.
In the end, we knew we certainly could do it aaa, but we really would have had to move. The 1050 was just made for that scene, its what it does best. And it works it so comfortably and at a relaxed pace. We didnt have a single issue with the clear laying down, even inside all of the builtins, etc.
I'd make the same call again for sure. In general, the aaa v hvlp decision for us is driven by quantity of material to be dispersed.
PS. It is worth noting that that Todd was leaning toward the 395 during most of the decision making process, mostly because that room scared the bejesus out of us in the sense of needing a one and done scenario, and he has logged hundreds of hours, er probably thousands, of hours on the 395 in the past couple of years, so his comfort level is very high with that machine. He fell in love with the 1050 for this type of work when it was all said and done. Prior to this room, he had about 8 hours on the 1050. Also worth noting that if the room had been paint grade, it would have been a no brainer to do it with the 395 (as we did the kitchen and dining room - see my latest tcr post), not that the 1050 cant do paint grade, but it would have been much slower.