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Question whether my compressor can run this.

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Forum topic by newbiewoodworker posted 01-11-2011 02:50 AM 2673 views 0 times favorited 15 replies Add to Favorites Watch
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newbiewoodworker

668 posts in 2292 days


01-11-2011 02:50 AM

http://www.harborfreight.com/air-tools/paint/detail-spray-gun-91011.html

My compressor is the DeWalt. It has a CFM, of, I think, 1.1 CFM @90psi… So Can I meet the requirement on this gun, of 1.5 CFM@30psi…

I really wanna just finish this darned toybox… and to do that.. a spray gun sounds good…

I know it can’t handle most spray guns, but this siphon feed seems to be lower than any other.

On that note: What is the difference between siphon feed and regular gravity feed?

-- "Ah, So your not really a newbie, but a I betterbie."


15 replies so far

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GaryL

1094 posts in 2295 days


#1 posted 01-11-2011 03:08 AM

Just keep in mind that a detail gun sprays a very small amount of material out, therefore the low cfm requirements. Overspray getting on to areas that are drying while still spraying the rest of the box may be a problem.
Siphon feed guns use a venturi effect to draw the material out of the cup, whereas a gravity feed is being fed into the airstream by “gravity” pulling the material out of the cup. You get a better and more even spray pattern out of gravity guns or pressure feed guns. Pressure feed guns put a small amount of air pressure into the cup to push the material up out of the cup into the airstream.
Your compressor will easily put out the 1.5cfm@30psi if it’s rated 1.1 @ 90.

-- Gary; Marysville, MI...Involve your children in your projects as much as possible, the return is priceless.

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newbiewoodworker

668 posts in 2292 days


#2 posted 01-11-2011 03:26 AM

I need to edit this out: Corrections:

2SCFM @ 100PSI

So what is my rough CFM down at about 40-50… does it double, down to 4SCFM @ 50?

Off of: http://www.harborfreight.com/air-tools/paint.html?p=1 What should I be able to run?

-- "Ah, So your not really a newbie, but a I betterbie."

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iamwelty

254 posts in 2580 days


#3 posted 01-11-2011 03:28 AM

What are you going to use the gun for?

-- There is a fine line between eroticism and nausea...

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newbiewoodworker

668 posts in 2292 days


#4 posted 01-11-2011 03:31 AM

Mostly Latex. Although I would like to be able to spray stains and such occasionally…

-- "Ah, So your not really a newbie, but a I betterbie."

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newbiewoodworker

668 posts in 2292 days


#5 posted 01-11-2011 03:31 AM

Edit: Double Post

-- "Ah, So your not really a newbie, but a I betterbie."

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GaryL

1094 posts in 2295 days


#6 posted 01-11-2011 03:43 AM

That gun will not spray latex, at least not effectively. The amount you would have to thin the paint would destroy all the properties of the paint. Don’t be afraid to try a lacquer. Check with your local paint suppliers, ie. Sherwin Williams, a Pratt & Lambert dealer (They may have M.L. Campbell lacquers, same parent co.) Lacquer is easier to spray than latex, but you have to deal with the vapors.

-- Gary; Marysville, MI...Involve your children in your projects as much as possible, the return is priceless.

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newbiewoodworker

668 posts in 2292 days


#7 posted 01-11-2011 03:46 AM

Ill keep that in mind.

But what will spray latex… I kinda wanna get rid of this can of Latex im sitting on…

-- "Ah, So your not really a newbie, but a I betterbie."

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GaryL

1094 posts in 2295 days


#8 posted 01-11-2011 04:02 AM

Without getting into an expensive spray rig, maybe buy some Floetrol and a quality brush and apply it buy hand.
Other than that, it means going airless, and not a Wagner, or a decent 4 stage turbine HVLP with large tips, although I have heard good reviews about the Earlex, but it’s still in the couple hundred range.
Anytime I spray latex I use my airless, Graco 390. There is a learning curve as with anything.
Practice with whatever you decide to do before tackling your project.

Edit: What exactly is the latex you want to use? Brand, sheen, type, etc.

-- Gary; Marysville, MI...Involve your children in your projects as much as possible, the return is priceless.

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newbiewoodworker

668 posts in 2292 days


#9 posted 01-11-2011 05:49 AM

Would my compressor be able to handle 7CFM @ 25PSI?

I am still confused how to deduce the CFMs at lower pressures…

If I can, couldn’t I use a textured paint gun, if you are worried about the nozzle size…

Why can’t I use a regular gun?

-- "Ah, So your not really a newbie, but a I betterbie."

View cabs4less's profile

cabs4less

235 posts in 2227 days


#10 posted 01-11-2011 05:57 AM

grizzly offers some 40.00 guns that i use for small projects i never pay attetiom to cfm its about capcity and recovery as long as you a 1.5 horse on 4 gallons you will have no problems but to be honest forget latex spray tinted laquers shermin williams sells them it dries and cures faster and is then enough to spray with any gum and is stronger than water bourne finishes

-- As Best I Can

View yarydoc's profile

yarydoc

417 posts in 2609 days


#11 posted 01-11-2011 06:05 AM

Harbor Freight has a gun that will spray latex. # 92841. I havent used this one yet but if it doesn’t work you can take it back.

-- Ray , Florence Alabama

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newbiewoodworker

668 posts in 2292 days


#12 posted 01-11-2011 06:14 AM

Can I meet that CFM requirement, for that #92841

5.5-9CFM..

Also, its a DeWalt 2 Gal compressor I am refering to, incase it wasn’t clear.

-- "Ah, So your not really a newbie, but a I betterbie."

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Simons44

93 posts in 2889 days


#13 posted 01-11-2011 06:50 AM

Newbie-
Are you sure this is what you want to do? A few posts ago you were upset that you purchased the wrong paint. Why not return the paint and get the correct paint? If that’s not an option, then you could just buy more of the correct paint.

You previously stated “After that, I simply refuse to buy more paint…”. I’d think this through before you make a final decision.

Are you just getting the gun so you can use up the paint even though it’s the wrong paint?

-Jeremy

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iamwelty

254 posts in 2580 days


#14 posted 01-11-2011 03:04 PM

I am betting a cold Miller Lite that you won’t be happy with spraying Latex from the Harbor Freight gun, Gary and Jeremy are giving you good advice. What do you want to spray? Furniture? Interior Wall? Exterior?... You will have much better results if you spray a oil based enamel with the guns you’re looking at…. Just my thoughts, I could be and frequently am wrong.

-- There is a fine line between eroticism and nausea...

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newbiewoodworker

668 posts in 2292 days


#15 posted 01-11-2011 06:05 PM

Let me preface this with: I am not ignoring anyones advise. Im a wee bit sick, so I maybe a little more “snappy” than usual.

First and foremost: I do want to get into spraying. I simply hate painting, so I do want to be able to spray the good stuff.

But, I do wanna use up this can of crap paint. Unfortunately I used half the can before I realized it was the wrong stuff. So Returing it is out of the question.

Im not looking for muesem quality on this piece. Its for a 6 year old. So with out a doubt, its not going to last. I just wanna coat the MDF, due to the health issues.

I do mostly Furnature.

-- "Ah, So your not really a newbie, but a I betterbie."

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