I built a temporary spray booth in my garage using 2 x 4's ripped in half. (2 x 2's cost more and you get less) Covered with clear plastic sheeting. So basically a 12' x 16' tent with two box fans. I used filters across the upper back wall and filters in front of the two box fans that were on the outer lower front wall. The box fans worked well on low. The filters (on the fans) needed to be changed often.
You need a way to get rid of the overspray, you need good lighting, you need some sort of work surface to mix your paint and clean your gun. Use a good respirator and bunny suit. Keep a box of gloves in with you and some type of rags/towels. You want to be able to do your work and not keep going in and out until you're done.
Have a good solid way to hold your parts and position so your overspray doesn't travel back over your piece because of air flow. You WILL still have overspray on everything inside so protect what you don't want to clean later.
Have a way to monitor your time accurately so you can follow your tech sheet. And thermometer or IR gun to monitor temps.
Parts that hang can and will blow out of position so mount them solidly.
I had everything I needed inside the tent setup and ready for mixing, spraying, cleaning. Not a perfect paint environment but better than outside. I had to take mine down but I can set it back up in the cooler weather when I am ready for more painting. I don't have room for the entire truck so I also am painting in pieces.
This is just my personal tent booth experience and what I learned the hard way. Good luck with your project!
Scott in Arizona
To add, I you're using an actual tent, a pressurized "booth" might be best. I had air pulling in mainly because of my location in the garage. Either way works.
