paint booth: How does it look?

[gorbak]

Please consider finding a sealed motor fan to reduce spark potential. Good comment earlier to turn fan on before spraying and leave running until all fumes have been dispersed.

Pat Garboden
Katy, TX
RV9A
N942PT

[hydroguy2]

I'd just flip the whole thing around. Fans in the garage/door to the yard. Hang a sheet door on low to the ground, but leaving small gap.

Then add a tight screen or filter to the suction side of the fans, reposition the fans to pressurize the booth. less chance of sucking bugs and blowing them into your booth.
The over spray will go out the bottom gap, you'll be sucking fresh filtered air through the fans(less hazard).

[OLDSAM]

Do you plan to plan to place filters between the booth proper and exhaust fans? If you don't, overspray can collect on the fan & blades, and be exhausted to the outside as well. Also second the previous comment about being certain that you have brushless motors, as brushes/commutator contact can occasionally make sparks.
Having filters prior to the exhaust will also tend to make the exhaust air/fume mixture a little leaner, and hopefully get it to nearer and maybe even below its lower flammable limit.

[Stockmanreef]

I was wondering if I should put filters on the fans. I was worried about the filters clogging and reducing flow. The fans are cheap. I plan to run them until the die. Actually I will see what happens after the first priming batch.

I don't think that you want to blow air in. You want to suck it out. If the air flow is high enough, then I won't worry about the explosion issue. Maybe I will ask an engineer at work to see if they think that I will hit any explosion limit. I can get the CFM of the fans (hopefully) and give them the size of the opening and what solvents. They will be able to give me some idea if I should be concerned.

I was wondering about exhausting the material outside to the back yard. I don't want to **** off any of the neighbors or the potential for wind blowing the epoxy back towards the house or garage and end up coating something with priming. The last thing that I want to do is expose someone to this stuff. It contains strontium chromate, which is obviously toxic.

[cattflight]

Originally Posted by Av8torTom

I've seen people use marine bilge fume fans because they are explosion proof. Don't know if it's overkill though.T.

Definitely not overkill and definitely a good idea. I bought 2x 4" marine bilge exhaust fans and used them in a paint booth about 2x the size of yours. They move about 200-ish cu ft/min. [like this one] I had a door with an intake filter up top and I put a filter on the interior side of a 2x6" framed exhaust port. Then ran the marine filters out the supplied hoses outside into an open Home Depot bucket half-filled with water to "catch" the exhausted spray. (I had neighbors right over the fence at the time and this knocked the smell down significantly!) Just remember to get yourself a decent 12V PSU to run the fans.

You are almost there! Looks great.