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HVLP

vs- High Pressure

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brandon

10-01-2001 09:03:07




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I am setting things up to paint my first tractor - have no experience, but want it to look like a 30 year pro did it. i need to buy the equipment, but as long as its not way out there (approx $600 or less for the compressor and gun, or one of those hvlp combos) what would you do? Thanks for the advice.




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Cliff Neubauer

10-01-2001 18:27:28




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 Re: HVLP - vs- High Pressure in reply to brandon, 10-01-2001 09:03:07  
I have not many good coments about the turbine powered HVLP units unless you get up into the $800+ range. You will need a good compressor for other things such as sanding so get the best compressor you can. For what you are going to be doing you should look at the Finishline II gun at the link below, I haven't used on but they are an excelent gun for the money, $150 at that site (I bought my Sharpe Platinum gun from that site, great prices and service). High pressure guns are an "old school" thing, I started out with one and it did a good job but the newer HVLP units are cutting edge technology and will lay down glass smooth paint. On the site I linked to there is a great painting forum that you should spend some time on if you want to learn how to do a great job the first time.

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Tyler(WA)

10-01-2001 11:08:59




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 Re: HVLP - vs- High Pressure in reply to brandon, 10-01-2001 09:03:07  
No question. HVLP

Easier, more efficient, less overspray.

And most improtant, a superior job.

Many good painters can get great results from the older guns but for us just starting out.... there's nothing to make you look better than a good result and that's more likely going to come from an HVLP gun.



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VaTom

10-01-2001 18:16:30




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 Re: Re: HVLP - vs- High Pressure in reply to Tyler(WA), 10-01-2001 11:08:59  
As one of those guys doing furniture quality finishes who has a lot of experience with a pressure gun, I also love HVLP. Haven't used the old gun since I bought the HVLP. HOWEVER, there's no reason to get a better finish with one. The spray technique has to be learned either way.

When I called CampbellHausfield to ask about their HVLP, they told me that I would not be pleased with their results for my expectations. The budget here's a little small for anything but used equipment. I got really lucky to find a used HVLP. If a used one can be found, great, but if used pressure equipment is all that's available, there's no reason not to get an equal finish. Switching from one to the other is the tricky part. HVLP gives a decidedly nicer work environment. And saves a little product. Good luck.

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Don

10-01-2001 18:48:58




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 Re: Re: Re: HVLP - vs- High Pressure in reply to VaTom, 10-01-2001 18:16:30  
What is the difference between the gravity fed and conventional guns? What's the advantage of one over the other?



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VaTom

10-02-2001 05:02:43




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 Re: Re: Re: Re: HVLP - vs- High Pressure in reply to Don, 10-01-2001 18:48:58  
Gravity fed has a small cup above the nozzle. I've never used one. Advertised as "touch up" guns. Small quantities of product, so refilling would be frequent if you're doing much painting.

The "conventional gun", whether HVLP (air or turbine) or high pressure, has a much larger cup below. The product then has to have some kind of air-pressurized cup to get up to the nozzle. I've not used the cheaper guns so can't make a recommendation but the $600 budget seems small for a new compressor and a new gun.

I know from experience that the same money will buy great equipment if found used. My turbine setup was only $275, $900 new. Similar for my high pressure hardware. Sure is nice to have enough air to do other things though.

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Cliff Neubauer

10-02-2001 06:36:45




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 Re: Re: Re: Re: Re: HVLP - vs- High Pressure in reply to VaTom, 10-02-2001 05:02:43  
They also make full size gravity feed guns, I have one and it is alot nicer than a syphon feed. With the gravity feed you can use every drop of paint and there is less that can go wrong when spraying.



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VaTom

10-02-2001 10:21:02




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 Re: Re: Re: Re: Re: Re: HVLP - vs- High Pressure in reply to Cliff Neubauer, 10-02-2001 06:36:45  
Thanks Cliff, learning something new all the time. Is there a leak-proof top on those things so that you can spray up and down? I have no problem with my pressurized pots but I do have a quarter cup to empty out when I've finished. Never been a problem. Balance of a large above-the-handle pot doesn't sound good when filled with product. I guess you can get used to just about anything.



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Cliff Neubauer

10-02-2001 17:40:03




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 Re: Re: Re: Re: Re: Re: Re: HVLP - vs- High Pressure in reply to VaTom, 10-02-2001 10:21:02  
In order to spray upside down you need to use the cup liners from Devibliss (they come with adaptors for most guns) which are basicly a zip lock bag with a little plastic deal that pushes through the bag and into the hole in the bottom of the cup. They work pretty good, the first time I used mine I painted an anhydrous ammonia bar and painting the bottom of it was a breeze. A bag of 48 liners and the adaptors sell for around $24, when you are done with one you just pull it out and throw it away. I thought the gravity feed gun might be awkward too but after the first few minutes you use one you will be used to it. The gravity feed guns also usually hold a little less than a syphon feed, I think mine holds 650cc instead of a quart so you loose a little weight there and I think the gun itself is a little lighter. The one complaint I have about a gravity feed gun is that you can't mix the paint in the cup like a syphon feed gun but I should be using mixing cups anyhow so that isn't a big deal.

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brandon

10-02-2001 10:14:43




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 Re: Re: Re: Re: Re: Re: HVLP - vs- High Pressure in reply to Cliff Neubauer, 10-02-2001 06:36:45  
so are you recommending gravity feed or siphon feed?
thanks



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VaTom

10-02-2001 15:01:58




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 Re: Re: Re: Re: Re: Re: Re: HVLP - vs- High Pressure in reply to brandon, 10-02-2001 10:14:43  
Well, Cliff is clearly recommending gravity feed. I'm suspicious and have absolutely no problem with either of my guns. How's that for a nonanswer? No plans for any change here. If you're buying new, I'd try both before buying. And make sure you have a full load of product in the pots.



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brandon

10-04-2001 10:57:04




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 Re: Re: Re: Re: Re: Re: Re: Re: HVLP - vs- High Pressure in reply to VaTom, 10-02-2001 15:01:58  
I have been told that the siphon feed can hook up to a paint tank - therefore able to spray the underside of a tractor by being able to turn the gun upside down - hence making the siphon feed a better choice for that reason - whats your call on that?
thanks brandon



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Cliff Neubauer

10-04-2001 15:07:03




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 Re: Re: Re: Re: Re: Re: Re: Re: Re: HVLP - vs- High Pressure in reply to brandon, 10-04-2001 10:57:04  
Devibliss makes some ziploc type plastic bags that work in the gravity feed guns allowing them to spray upside down and they also make clean up easier. I'm sure there are a couple situations where the siphon feed guns are better but I haven't found one yet. Generally the cheaper conventional guns are better than the cheaper HVLP guns because they are older technology.



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VaTom

10-04-2001 18:40:44




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 Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: HVLP - vs- High Pressure in reply to Cliff Neubauer, 10-04-2001 15:07:03  
OK Cliff, I'll give you one. With a siphon gun you can hook up to a 2-3 gallon pressurized paint pot. Any chance of that with gravity? If you can do that I ain't gonna arm wrestle with you. And this really is the best way to spray the underside of anything. Just keep on spraying and you don't have to worry about getting tired holding up a quart of product.



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LarryG

10-09-2001 12:10:37




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 Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: Re: HVLP - vs- High Pressure in reply to VaTom, 10-04-2001 18:40:44  
I've just used my Finishline II with gravity feed with a 6.5 hp compressor with a 80 gal tank. I used the liners and there virtually was no clean up. Perhaps the pressurized pot set up will get underneath better, but I'll bet your still cleaning up while I'm on my second beer staring at my good work.



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