Pressure Pot

Pressure pots work fine and they are for PAINTING, not undercoating. They are designed so you can mix alot of product and paint for a long time so you don't have to refill your gun. The biggest problems with them 1 they are bulky and not that portable once you start painting, make sure you have a long enough hose. Two make sure your air compressor is up to the task (plenty of CFM, at least a 5hp 2 stage NOTHING smaller)and that your air supply is clean and dry. Now the next part is on material selection, if you are painting a single stage you will probably fine, but if you plan on bc/cc then I would stick with a quality (SATA, Iwata, DeVillbiss, Sharpe Cobalt) gravity feed gun that atomizes good with a 1.3-1.4 tip for metallic colors and the clear. A pressure pot is just a giant siphon gun and generally they don't atomize modern high solid clears very well. Hope this helps and post some pic when your done.