A: The tested minimum air compressor is an 8cfm compressor with a 50L tan. But we would recommend a 14cfm with 50L tank, so that the compressor isn't working to it max level all the time. This will make the compressor last longer as it not working so hard.  Also a good air regulator is a must, to get a constant air supply to achieve a consistent spray pattern.

A: For 1mm- 2mm topcoat a 6.5mm nozzle, for 3mm topcoat and light Tyrolean use a 8.5mm nozzle and for heavy Tyrolean and thick splatter coats use a  10.5mm nozzle. 

  A: First thing is to check the compressor is working ok and is connected properly without any leaks. If all is ok, check the air holes in the nozzle for blockages and clean through with a small pin or  nozzle brush. Also keep the material that is being sprayed, at the same consistency  throughout the job, adding the same amount of water to each bucket and mixing to  make them all consistent.