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Old 05-06-2008, 10:57 AM
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Compressor question

I am working on painting my first car. I originally purchased one of the 43430 guns from Harbor Freight but the compressor I have access to isn't powerful enough to run it. The 43430 requires between 10-14 cfm while my little compressor puts out between 2.8 and 3.7 scfm (I don't know if scfm is any different than cfm). I turned the air flow up to 90 psi at the compressor and 50 psi at the gun but it would only spray a really fine mist out. Too bad.

In the mean time I have been using an old Brinks syphon feed gun. It is old but I have been told it was a quality gun at one time, and can do the job. Unfortunately for me the tip of this gun is smaller than the minimum 1.4 tip I need for my SPI single stage. My next thought was to get one of the standard gravity feed guns from Harbor Freight (model 47016). However, I just checked the HF website and it says this gun requires 6 cfm.

So I have two questions. First, will my compressor not be able to run this gun either? And second, this gun has a 1.5 tip, will this be ok when the paint I am using calls for a 1.4 tip?


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Last edited by SlowB16; 05-06-2008 at 11:04 AM.
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Old 05-07-2008, 12:05 PM
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Actually in terms of painting equipment you have a tire pump not a compressor. In order to use that HF gun you will need a compressor with around 12 CFM and even that will be cutting it close but with a bit of planing ahead it will work, bigger however would be better. If you plan to do any body work or painting you really need to invest in a compressor because no matter what the quality of the air tools you buy they will not work without enough air.
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