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Old 02-05-2010, 11:13 PM
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time to upgrade spray gun

i have used a siphon gun, a devilbiss 502 for a long time, and am getting ready to come into the new millenium and invest in an hvlp gun. What is a good quality gun. i have been told that many of the new paints are to be sprayed only by hvlp, is this accurate? I like my siphon gun but am willing to change and use the old reliable devilbiss as a primer gun. What are the pros and cons of the hvlp?

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Old 02-06-2010, 12:13 AM
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Just because a gun is gravity fed dose not mean that it is HVLP. Their are many gravity guns that are not HVLP.

Since your an old devilbiss guy I recommend staying with them they are still good guns and are more value priced for at home novice painters.
They are many good spray guns on the market for a good value.
some include:
The devibiss Finishline (3 tip set up's included for HVLP and Non) $150
Devilbiss CVi $319.99
Binks M1G (also made by devilbiss) $329.99
Devilbiss GTI (two tips included) $249.99
Sharpe Razor $399.99
Sharpe cobalt $159.99

Ive used all of the guns above and they all are good guns. The Finishline is a damn good gun for novice painters and is cheap performance. But if you want more of a professional gun then I would look at:
Devilbiss Tekna
Iwata lph-400
sata rp-2000
Are top of the line guns in the $500 price range.

Remember to pick a gun based on the specs of your air compressor. You don't want a gun that needs more air then you can give.
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Old 02-06-2010, 12:27 AM
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I am in the same boat. After struggling for 20+ years with my Binks gun,I made the swap to a HVLP conversion gun about 5 years ago. I am now saving the hard earned to buy a proper HVLP turbine set up.
I have found that the HVLP conversion guns encourage that dimpled effect you see on new factory built cars and it takes forever to flat out the paint. ( I use 2K exclusively) .
After seeing the paint flow from a Turbine gun I am firmly convinced I need to have one.
Firstly,Hardly any spray fog,
Secondly,Lowered use of reducer,in fact the paint can go on quite thickly. I haven't found any flow specs on the paint sheets so i guess it's a matter of experiments .
Third,with a proper turbine unit (not a $80 HF unit... ) the paint is cooler as it goes on,again lessening the use of reducers. I don't know about your local climate but here i need to slow down the paint because of the ambient temp.
Forth,the guns are nice and simple with a huge fan range. The one I used goes from a pencil line to 15" wide. I can't do that with a conversion gun .
Fifth,My compressor is close to 25 years old and I need to replace it so the obvious choice is a turbine .

I have tried a lot of different conversion guns and to be frank,most are junk and not what they claim to be. many requiring a huge CFM to work.
I suggest you try Fuji and Apollo and see if you can arrange a demo run. i am sure you will be impressed by either companies products.
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Old 02-06-2010, 12:29 AM
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I am fortunate enough to have a 60 gallon 5 hp compressor with a refrigrated air dryer in line. I guess I dont undersatnd the difference between the hvlp and non hvlp. I appreciate your gun recomends. I paint maybe one or two cars a year and just grab the devilbiss and spray it out. I do likr the devilbiss guns, Started using one in the late 70s. Just havent done huge amounts of spraying over the years..........Steve
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Old 02-08-2010, 12:56 PM
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Oh i miss my old mac tools cup gun w/1.8 tip. That gun layed down clear better than any of the HVLP's or RP guns i own. Most of the product would end up in the booth filters but man was it slick when you finished...HAHAHA!
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Old 02-08-2010, 04:22 PM
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benchracer,your compressor would be OK with a conversion gun. But don't buy cheap,get the very best you can afford. Again i can only recommend Apollo's product having tried Iwata etc and found them to be not much better than a regular gun. A proper conversion gun should have a huge air inlet tract in the handle .Around 1/2" on a good one is normal . These conversion guns rely on a big volume of air and if the handle is the same size as a regular gun then that's all it is,just a spray gun. There are dozens of these junky chicom made items on the market and too many buy them thinking they are getting the real deal. The result is a bad name for HVLP.
i haven't used too much water based finish yet but almost all new cars here have it.i want to try ity on my nerxt project as an experiment,and i want to use a turbine to do it...I may have to hire one if i don't win the lotto...
Wwilliams, you are having the issue i mentioned above. A lot of So called conversion guns use too much air at the tip to achieve a fan . A real HVLP in use,just seems to spray paint only . No bounce off the part being painted means the gloss is amazing. A comparable effect is powder coating being applied.
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Old 02-10-2010, 01:02 PM
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I thought i had a couple of good guns. Is my Iwata 400 not good enough or my Devilbiss Plus either??? I know the Plus is not a full Hvlp but a reduced pressure.
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Old 02-10-2010, 03:39 PM
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My conversion gun is a Iwata 400 also but difference in "off the gun" finish has convinced me that they are just a compromise to the turbine gun. Where time is money it has convinced me that the less work to provide a perfect finish,the better I feel about it. it's the difference in many hours of work (and money) .
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Old 02-10-2010, 10:51 PM
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Quote:
Originally Posted by mercmad63
My conversion gun is a Iwata 400 also but difference in "off the gun" finish has convinced me that they are just a compromise to the turbine gun. Where time is money it has convinced me that the less work to provide a perfect finish,the better I feel about it. it's the difference in many hours of work (and money) .
True.. True.. I kinda always felt that way about that gun.. I do much better with clear through my Plus gun. . Why is buffing a car one of the rare things that you can be good at but absolutely hate to do?! I dont think i ever polished a paint job from my cup gun except for trash or debris removal.
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