Your biggest expense (unless you all ready have one) is going to be a good compressor that can handle the sanders ,grinders and the spray gun .A clean DRY supply to the gun is essential to a long lasting paint job from the primer to the clear any water particles trapped under the paint will cause MAJOR problems later .Look at more than just a simple water trap .A dessicant dryer is ideal to clean and dry the air before the air hose to the paint gun .
