[cocomonkeynuts]

I think it depends upon the logistics more than the actual surface area really. If it's a confined space, full face is obviously preferred. If you're spraying overhead a lot, that will add a fair amount of suck as well. We didn't even have doors on the units and the buildings themselves were tented, so I used half face, roughly 3-4 sets of organic filter changes per day. Over 1,000 gallons of shellac. I'm getting sick just thinking about it.

What sort of equipment do you use to go through 1000 gallons shellac? I'm picturing a big pneumatic pumps pulling out of drums, graco king or similar, and a fresh air supplied full hood.

 

[cocomonkeynuts]

Old school Speedflo 5500 Convertible. That thing runs like a top after all these years. I only used half face respirators the entire time, but we had huge industrial blowers to circulate fresh air. I sprayed more shellac in the 4 weeks I was there than the rest of the 34 years combined.

I was thinking a big pneumatic sprayer to keep things explosion proof but if you have some big air movers maybe not needed. I know of at least two painters who perished in a lacquer explosion here many years ago.