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Old 11-15-2005, 12:54 PM
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buying a new compressor

I searched through hundreds of postings. There is just too much information to glean the few facts I need.

I have learned
22 cfm is minimal for a shop
check tool cfm against compressor cfm
2 stage is better
larger tank equals cooler and dryer air
hvlp i assume is high volume low pressure
use hvlp fittings

Which spray gun is best for a beginner (low cost is desirable)?
Does an HVLP gun do a better job or just less overspray?
Do I need 22 cfm for a spray gun, pump up slicks, and an air ratchet?


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Old 11-15-2005, 01:39 PM
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What I have gotten!

What I have gotten from the discussions is that what we really need is about 15 CFM@ 90-100 psi for the compressor..most air tools will run fine with that..Like your dynabrade or air boards which are the big air suckers...As far as the tank size is concerned the mfr's have that all sorted out in realtion to compressor size..

AS to the HVLP piece..that stands for High Volume Low Pressure..means a lot of air at a low pressure at the tip..Those guns typically require about 15 CfM to run..the conventional guns require about 6-8 CFM to operate..the difference being that the conventional gun delivers higher pressure at the tip in order to atomize the paint..The HVLP fittings flow more air to support a HVLP gun..

The result is the the HVLP uses less paint and has less overspray..Collision shops like the HVLP because since it will use a mite less paint to do a job this results in a cost savings over a year of painting..This may or may not be a difference to you in a home shop...It does take a bit of "operator adjustment" to use a HVLP if you are accustomed to using conventional spray equipment..

To get a good job of painting the main thing I have found is to have a quality air/water filter regulator setup located down stream from the compressor..usually convenient to the painter in the paint booth..High pressure air is picked up from a seperate fitting upstream from the paint regulator and has its own regulator and filter/oiler for the air tools..

I have tried most all of it and now do what is known to work..
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Old 11-15-2005, 03:59 PM
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IMHO a old pro can get a good paint job with about any gun.

A beginner needs a better gun.........because everyone(almost) are using HVLP guns you can buy a used used conventional gun cheap. I have a Sata gun($400+) & several Devillbus' & a Binks model 7.

If you are painting a single stage paint I'd buy a used Binks model7.

If you are painting bc/cc you need more atomization & I'd call & ask Len what to buy. Keep in mind that if you are painting a whole car you need a gun w/a large spray pattern(higher cfm). Also top loaders are great,HVLP are not necessary.

Let us know what you are thinking of buying before you buy.

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