Jerry Richardson
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Well, I use Spies Hecker 480 high tech water base. It is Chromax Pro and Standox Standoblue in a different label. PPG water borne is an easier transition for less experienced painters. It applies more like solvent. Multiple coats flash between each coat. It is very slow compared to the Axalta group. I love my system. The color matches are outstanding once you find the correct variant to the car. That is the problem. Finding the color is a treasure hunt. Now that I have worked with it for a few years I pick them pretty accurately. The learning curve is long. PPG has a much easier system to learn. It is just dead slow to apply is all. With equal knowledge and time with both products you would use Chromax Pro. My color match time is spent while products dry. No lost production. I have learned to read the variants. I do not do spray outs. It’s a waist of time and materials. I can apply my base on a 3 panel spot job in 30 seconds. PPG would take up to a half hour. More on some colors. Speed is in the Axalta corner. PPG has the easy learning corner. I think you should go with PPG. You already know the rest of the system. More painters use PPG than any other brand. Only the top income guys use the European brands.
It is completely dependent upon the clear you are spraying and your personal techniques. Personally a 1.2 sounds too small to me. You should experiment with different set ups. Remember, fine atomization can be achieved either with air pressure or mechanical dispersement. In order to obtain maximum transfers efficiency you need to find a balance between the two. Again, the brand of clear you use dictates your decision. I spray Spies Hecker with an older iwata lph400. 1.3 head and a silver cap. I have not polished anything for many months beyond small areas. A small run or a piece of dust. I had to relearn my set up after switching from BASF a few years back. Experiment and don’t blame the paint. I have two boxes of SATA paint guns that just collect dust. I know a painter that sprayed Standox for 12 years with an iwata just like mine. The shop sold and now he sprays NEXA. He switched guns to a SATA 4000 with a 1.3 . He loves it. Different brands require changes. Good Luck!