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For a bloke who's supposed to be a gun painter that Kevin Tetz doesn't impress me too much. His "wall of air" doesn't prove anything - like I said before, you set up your gun by spraying on some scrap until the pattern is right. That's it, period.
What he's doing is, quite successfully, impressing someone like you, who doesn't know better, with the idea that he's a fount of knowledge. That makes his next sales pitch all the more believable and you more likely to press the "Buy Now" button.
For example, his next little sell is the rattle can of gun wash thinners. Seriously? If you were to attach a hose to where your cup screws on and then feed thinners through it under pressure then, eventually the paint passage will be clean. But his spray can doesn't push the thinners all the way through and what you'll end up with is a little colour in the fluid tip and, over time, a build up at the back, where the needle comes in.
When I clean my guns I use recycled thinners drawn up and through a Schutz gun. So the thinners is "air assisted". That cleans the top of my guns and all the outsides, much better than his spray can and at a tiny fraction of the cost. But I always have to remove the fluid tip to get that last little bit that stays in there, even if you try to spray it out. Removing the fluid tip means I know that it is clean and it's easy to push a brush back into the area at the back and clean the needle where it comes through the packing.
Believe me, if I cleaned my guns like he demonstrated they would all have a little paint left in them, something that may not be nice if you've just painted black and the next job is white, and they would have sticky needles if left for a day or two.
I was then silly enough to wind back to the beginning and be assaulted by his theory that one should paint a car "as though it were a refrigerator". Kidding, right? Nobody does that, certainly not in production. A boss who found out his $80/litre premium clear was being used to coat every masked up opening would have your termination advice ready for you as you stepped out of the booth from fixing all the runs on shaped sections where you painted the refrigerator instead of the car.
At that point I could stand it no longer and stopped that rubbish.
Believe me, I'm not trying to put out the fire of your enthusiasm but when you're still learning the best thing you can do is follow the tried and proven procedures that are detailed all over this site and recommended by all the experienced guys here. When you've been painting, full time, for about 20 years, look me up and we'll have a conversation about setting sweet spots with air alone.
DarrelK's Website
you are going to have a lot of fun learning how to do this......
