To all the "at home" painters
What paint equipment do you suggest? (gun and such)
What type of filers on the compressed air?
Plastic tent or open air?
How does humidity effect the process?
If tented, positive air or negative air?
Bunny suit ?
Respirator type and filters?
Just trying to understand what all is needed for future reference.
Tim
I have a lot of experience painting at home unfortunately. One winter a few years ago we got extremely slow at work in which forced me to do side work at home. My coworker and I got hooked up with a used car lot who sent us 10-15 cars a week. We didn't do all any overs but small repairs, biggest being a front end of an suv. We sprayed in my small detached 2 car garage. We found we got the cleanest paint jobs where when we closed the shop up and just had an exhaust fan. Prior to paint as if we were getting ready to pull it in the booth at work is, clean and blow out the shop. While the fan pulled the remaining airborne dust out we would drape car plastic over the tool boxes and everything else that dirt could come from. We would then wet the floor and plastic down. Pull the car in and close up the shop. We would only turn an exhaust fan on. No intake fan at all. They came out pretty clean, not spray booth clean but manageable. Since then I did one other all over and did it the same process with the same results.
All I use are SATA's but they are very expensive. A decent brand of gun that won't break the bank is a Devilbis Finishline. It comes with 1.3, 1.5, and 1.8 cap/tips. The 1.3 cap/tip is a good all around tip for sealer, base, and clear. Depending on cup or no cup they cost about $200. Most painters like using the 3M PPS system so you can now get sprayguns without cups. It is basically a liner in a cup and works like a baby bottle. Benefits of using them are easy cleanup, built in filter, and if you have to you could literally spray upside down. I would get the large 32 ounce cup and liners. Ask the paint store if they have the 16024 liners with an included hard cup. You will also need an adapter for the gun to the PPS cup. For a primer gun nothing fancy, in fact you might find the 1.5 tip will atomize the primer well enough. At work I use a 3M sealer disposable tip spray gun as my primer gun. By spraying the primer slicker it's a little easier to sand. I think it uses 1.3 or a 1.4 tip.
Another thing that will be beneficial is using HVLP fittings all the way from the compressor to the gun. The larger diameter of the fitting will provide enough air volume to properly atomize the paint. There is a huge difference between using them and not using them, at least I can tell the difference.
For the compressor, get the biggest you can afford. You can't have too big of a compressor. The better they can keep up the better. Sprayguns use a lot of air. Second only to a sand blaster. At home I use a three stage Delviblis desiccant filter but they are expensive. For a guy on a budget a simple oil/water separator near the compressor and a filter on the end of the gun should suffice. Make sure to drain the compressor often. BTW If you have an auto oil system in your system you will need a new hose, it is contaminated and will cause major problems.
Humidity doesn't effect urethane like it did with enamel, lacquer, ect. It does however effect waterbourne but only in that it takes longer to flash off. In Maryland, Delaware, and California you can only buy waterbourne basecoat. If you don't have to, try and get solvent basecoat. It's easier to spray for a beginner.
Paint suit.... Autobody supply places sell washable suits or disposable ones. All are better than nothing. Respirators, I like SAS because they are affordable, fit me better, and use disposable filters instead of the 3M type that you throw the whole respirator away. They all should have a pre filter and a charcoal filter. You can also get a fresh air system but they are expensive for a guy in his garage. You will be fine using the disposable respirator for hobby type use.
That should cover all your questions, if you need anything else let us know.