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Old 09-25-2016, 08:34 PM   #21
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After speaking with a SW spray center they believe , for example, the titan air coat uses a Thomas air compressor.

I think it's this model but a smaller tank. http://www.mastertoolrepair.com/hp-o...-p-759389.html

5cfm oiless. Similar price to what I was quoted on the phone by Titan.

I don't know what the 395 finish pro has on board. I havent seen one in person.


G40 manual has a chart for determining air requirements.
http://www.graco.com/content/dam/gra...3A0149EN-E.pdf

Rouhly 4.2cfm @ 10psi and 6.4cfm @ 20psi.

Seems to me you need either a decent piston compressor /turbine or a large enough tank reserve to spray constantly as one might for baseboards and crown.

Cabinets you'll have a lot of start stop but a mile of wainscoting is still fine finish but an almost constant application.

I'm simply asking to further the conversation. I'd like to do something similar to what you have in the future. I need to pick up a new job site compressor sooner than later as mine is on its way out anyways. Figure I'd kill two birds.

Last edited by sayn3ver; 09-25-2016 at 08:38 PM..
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Old 09-25-2016, 09:36 PM   #22
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@sayn3ver A drywall friend of mine was telling me his compressor craps out every other year but it has a 3 year warranty so he takes it back to the box store he got it from and exchanges it. He hasn't bought a compressor in the last decade. It's one of those warranties no one takes advantage of I'm guessing.
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Old 09-25-2016, 10:04 PM   #23
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Quote:
Originally Posted by sayn3ver View Post
After speaking with a SW spray center they believe , for example, the titan air coat uses a Thomas air compressor.

I think it's this model but a smaller tank. http://www.mastertoolrepair.com/hp-o...-p-759389.html

5cfm oiless. Similar price to what I was quoted on the phone by Titan.

I don't know what the 395 finish pro has on board. I havent seen one in person.


G40 manual has a chart for determining air requirements.
http://www.graco.com/content/dam/gra...3A0149EN-E.pdf

Rouhly 4.2cfm @ 10psi and 6.4cfm @ 20psi.

Seems to me you need either a decent piston compressor /turbine or a large enough tank reserve to spray constantly as one might for baseboards and crown.

Cabinets you'll have a lot of start stop but a mile of wainscoting is still fine finish but an almost constant application.

I'm simply asking to further the conversation. I'd like to do something similar to what you have in the future. I need to pick up a new job site compressor sooner than later as mine is on its way out anyways. Figure I'd kill two birds.
I did not have a problem running out of air with my little compressor, it came with my nail gun kit. Running at 20psi doesn't take much to keep that pressure once the motor kicks on. A decent brand compressor with wheels will be my next purchase.
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Old 09-26-2016, 01:01 AM   #24
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Quote:
Originally Posted by sayn3ver View Post
After speaking with a SW spray center they believe , for example, the titan air coat uses a Thomas air compressor.

I think it's this model but a smaller tank. http://www.mastertoolrepair.com/hp-o...-p-759389.html

5cfm oiless. Similar price to what I was quoted on the phone by Titan.

I don't know what the 395 finish pro has on board. I havent seen one in person.


G40 manual has a chart for determining air requirements.
http://www.graco.com/content/dam/gra...3A0149EN-E.pdf

Rouhly 4.2cfm @ 10psi and 6.4cfm @ 20psi.

Seems to me you need either a decent piston compressor /turbine or a large enough tank reserve to spray constantly as one might for baseboards and crown.

Cabinets you'll have a lot of start stop but a mile of wainscoting is still fine finish but an almost constant application.

I'm simply asking to further the conversation. I'd like to do something similar to what you have in the future. I need to pick up a new job site compressor sooner than later as mine is on its way out anyways. Figure I'd kill two birds.
I agree with that. You would need at least a 30 gallon compressor for that type of work. Those are pretty big but still somewhat portable. Cabinet doors and boxes are much shorter runs. You can control how fast you want to go and the tank has time to build back up between doors.

I wonder how many painters have a trailer just for a compressor? A 60 gallon would be ideal.

http://www.homedepot.com/p/Porter-Ca...3066/203653364

Last edited by Mr Smith; 09-26-2016 at 01:06 AM..
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Old 09-26-2016, 09:35 AM   #25
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If a pancake works I'm all for it. It means whatever new comoressor I get is gonna do the job.
But I look at these specs on the AAA guns and while they are worlds better than the 11-16cfm requirements of some full size hvlp guns, 6cfm is still out of reach of all reasonable hand carry size compressors.

Or maybe I'm not understanding gracos chart.

I also don't understand how these AAA units like the 395fp or the Titan 440 get along without a water separator. I guess it's fine for WB products but wouldn't it be an issue spraying lacquer or alkyd enamel undercoat, alkyd finish , etc.

I'm not trying to make things more complicated, I just don't know or have the experience. The only real spray experience I have under guidance was a short gig working in a racing shell repair shop (composite rowing shells). The guy gave me a crash course in fiberglass/carbon fiber repairs, injecting and vac bagging. I know he did some touch up spraying with a small single stage compressor. I also know he had me spend a great deal of time sanding high build primer and orange peel when he was done ....

Maybe not the best painted himself but he could make the spray jobs he did look good with a lot of wet sanding and polishing compound. I guess that's the hard way.
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Old 09-26-2016, 11:14 AM   #26
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Quote:
Originally Posted by sayn3ver View Post
G40 manual has a chart for determining air requirements.
http://www.graco.com/content/dam/gra...3A0149EN-E.pdf

Rouhly 4.2cfm @ 10psi and 6.4cfm @ 20psi

One thing to remember is that most compressors are rated at x.x CFM at 90psi. As you drop the psi the CFM's increase.

I'd assume that a 2hp unit with a 4 gal tank should be sufficient for onsite work. Here's a good example: https://www.amazon.com/gp/aw/d/B000P...hEL&ref=plSrch






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Old 09-26-2016, 08:47 PM   #27
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They don't gain much with the psi drop. If it's a piston compressor and it makes 4cfm @90psi it might make 4.5cfm @40.

It's not displacing any more air(piston stays the same size) nor running at a different rpm. The cylinder volume doesn't change either.

Just saying.
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Old 09-28-2016, 04:31 AM   #28
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Quote:
Originally Posted by sayn3ver View Post
They don't gain much with the psi drop. If it's a piston compressor and it makes 4cfm @90psi it might make 4.5cfm @40.



It's not displacing any more air(piston stays the same size) nor running at a different rpm. The cylinder volume doesn't change either.



Just saying.

You make a great point about the piston, rpm and cylinder volume. I'd never connected the dots before, but it makes sense why you don't gain much CFM as you decrease the PSI.


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Old 10-12-2016, 07:56 AM   #29
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Curious Mike Cali. What are you drying your cabinet doors on? Couldn't see in the pics..I've built a collapsible dry rack for my projects.
On another note. I've also been thinking of getting setup with an HVLP system.
However I figured just getting a single Greco unit would be more organized and less equipment to haul around. Has anyone tried any of the Greco HVLP units?..
Also, are you using your HVLP to spray clear coats? I've done a bit with my airless 495, but find it a touch aggressive.. using a 312 fine finish tip..
Great Post BTW. Still trying to digest all the info on here as I've been an airless spray guy most of my career.
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Old 10-12-2016, 10:14 AM   #30
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Quote:
Originally Posted by finishesbykevyn View Post
Curious Mike Cali. What are you drying your cabinet doors on? Couldn't see in the pics..I've built a collapsible dry rack for my projects.
On another note. I've also been thinking of getting setup with an HVLP system.
However I figured just getting a single Greco unit would be more organized and less equipment to haul around. Has anyone tried any of the Greco HVLP units?..
Also, are you using your HVLP to spray clear coats? I've done a bit with my airless 495, but find it a touch aggressive.. using a 312 fine finish tip..
Great Post BTW. Still trying to digest all the info on here as I've been an airless spray guy most of my career.
I use these
https://erecta-rack.com/

Can only do one side at a time though. Some guys have set up systems that can hang doors from hangers and do both, but I like this way.

I have an hvlp system, don't use it. Very slow and hard to get a nice wet coat. Honestly, I think there is more overspray then the system I have in my post. Other than the compressor, not much more stuff to haul around. With hvlp you can't control the material pressure, just the air. With AAA you can control both.
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Old 10-12-2016, 08:46 PM   #31
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I recommend the door rack painter you can stack 38 cabinet doors painted both sides with a tiny foot print.
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Old 11-14-2016, 11:14 PM   #32
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Quote:
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I recommend the door rack painter you can stack 38 cabinet doors painted both sides with a tiny foot print.
Can you 100% guarantee that those racks don't leave any marks or indentations on the cabinet doors? It must be touching somewhere. Weren't you worried about that too before you bought it?

Can one man use this system or do you need a helper? I like the idea of using hangars to spray both sides at once but I've never tried it. Your system seems to be compact which is a big selling point. To hang them you need a big drying area.
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Old 11-16-2016, 03:22 PM   #33
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In general air assist airless guns use at most 7 CFM with about 10 psi at the cap typical pancake compressors can give about 3.5 CFM at 40 PSI which may be closer to 4.5 at 10 psi so its probably a bit undersized but it is working which is what matters . For those considering air assist airless vs pressure pots with HVLP heres a good guide on the pros and cons of each.
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