Join Date: Apr 2004
Location: mornington pennisula
Re: 7.5CFM air compressor suitable to spray car?
depends on the gun - different guns will require different cfm and pressure ratings.
some guns require as low as 7-8cfm some as high as 16 cfm constant pressure .
you should be able to manage the smaller parts with a little persistance and having clean dry air is also a very important factor .
high pressure v's hvlp (high volume air - low pressure) - dosn't mean U only require a small compressor.
Hvlp still requires the same if not more air volume , the difference is once the air reaches the tip(nozzle) with highpressure staying around 40-50psi at the tip , and hvlp only at 8-10psi at the tip which gives a much higher transfer rate(paint to panel) and less overspray than high pressure ..
It dosn't matter with high pressure vs' low pressure they both spray the same material it the size of the tip which need bigger or smaller for different materials , a 1.4 tip is a general size for painting .
a low cfm, high pressure gun with 1.4 tip is what I would look for If I didn't have a good compressor.