Actually it's extremely forgiving if you use the right equipment.
1. Before you purchase, order from a company with a good return policy, the stuff goes bad in cans really fast, and on my last project I bought 3 orders and returned them before we got material that hadn't rusted inside the can. Shelf life is very limited.
2. Beyond any product I've ever used, this stuff is really strong chemically and the typical respirator for auto paint really isn't sufficient, even with good ventilation. Best option, borrow an air tank type mask, or get the best double canister respirator you can buy or rent.
3. You need a pressure pot gun with a 2.0 or 2.2 mm nozzle to get a nice color fleck. I found a used Devilbiss gun online and bought a new needle, nozzle and air cap online and did it all for about $250.
4. Be prepared to pull your masking tape before things dry, chemically it soaks into the masking tape (even automotive masking tape) and dries pretty hard. Let it flash an hour or so and pull it.
5. I had great success pulling all the window lifters, and latches, taping their slots, and inserting cardboard cut to fit within the weatherstrip and taping the windows shut. Gave me a clean inside edge, and was easy to remove from outside with no tape lines. some windows I removed the sashes and used home furnace filters (1 inch thick) and a box fan to help move air in and out. Which fans I used depended on which end of the trailer I was spraying in.
6. Paper your full floor, buy a disposable Tyvek suit, with booties built in and wear a safety glasses you don't mind tossing and rubber gloves. follow the directions on their website for gun pressures, and try it out on some scrap cardboard etc.
7. Use a good automotive epoxy sealer primer underneath, and realize the initial "fog coat" is somewhat translucent, so if for example you spray the Madusa Gray (closest to the original color in the early 60's) you'll get a brighter color if you use a white primer versus a gray primer. Plan on letting the interior flash out for a week or two as things cure.
8. Prep work and masking was 99% of the work and time, actually shooting a 24' tradewind was a 2-3 hour project including flash time and clean up.
9. It's an awesome product, and with just some basic practice on test boards and a few hundred in tools and you'll have a bulletproof finish that you'll love! Far superior to anything you can roll on. Let me know if you have any questions.
Scott & Megan
VAC LIBRARIAN WBCCI 8671
1963 Safari from the 1963-64 Around the World Caravan