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Old 08-09-2007, 09:32 PM
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Iwata LPH400 w/Sikkens

Hello all, I was wondering if anyone is using the Iwata LPH-400 with Sikkens? The shop I work at is using Autoclear III and I am having a hard time to get the clear to lay like I think it should. What are your settings/technique? I have the fan, fluid, and internal reg in the full open position. Air pressure is set at 20 psi on the reg on the gun. I am getting the thick and wavy look. Thanks in advance.

Don

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Old 08-09-2007, 10:06 PM
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I am having an LPH400 shipped to me, right now I am using a W400LV which is similar but compliant not HVLP. When I was getting the "wavy" look I found that choking the material down to about a 3 turns out range helped a lot. Spraying closer with these guns seems to work well too. Are you measuring your air pressure at the gun with a full trigger pull? Sometimes high solids clears can benefit from some extra air pressure, even though it would be over and above mfr. specs.
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Old 08-09-2007, 10:08 PM
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Thanks for the reply. Yes I have the trigger pulled fully when setting air pressure. I also spray close(4-5")with around 75% overlap.
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Old 08-09-2007, 10:17 PM
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Then I would just take a guess and say you ought to try bumping the pressure up a bit and start choking the material down. Usually this means spraying a bit slower, and/or increasing overlap a bit.

I've been fighting urethane wave myself with certain clears and have been getting good results by running my gun over the max recommended pressure. I go over by about 15% which for you would be 23 psi. Might be worth a try, little increments and see how it goes.
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Old 08-09-2007, 10:23 PM
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Quote:
Originally Posted by schatzy
Hello all, I was wondering if anyone is using the Iwata LPH-400 with Sikkens? The shop I work at is using Autoclear III and I am having a hard time to get the clear to lay like I think it should. What are your settings/technique? I have the fan, fluid, and internal reg in the full open position. Air pressure is set at 20 psi on the reg on the gun. I am getting the thick and wavy look. Thanks in advance.

Don
Schatzy my man, sounds like you need some work in the gun settings department to start.. Check this Setup

and a couple threads just regarding Iwata lph 400's

Gun Review
More reviews and tip selection

Plus the Iwata forum here Iwata Board
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Old 08-12-2007, 08:54 PM
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Update: I went into work today to spray a Bonneville. I have been to the Iwata site and Hub recommended the wide open settings that I have been using. I tried the way on SPI's website. I ended up with the fan all the way open, fluid three turns out and bumping the pressure for the clear up to 23. The clear is looking alot better, looks like there is some very mild striping in the hood. It might be from the sealer because I had the fan turned down when I sealed and when it flashed I could see some wet and dry stripes. It is a high charcoal metallic(WA 821K)and overall I am pleased. Had a couple minor flow checks in the bumper but nothing that can't be scuffed and buffed. I will try and post some pics tommorrow to see what you all think. Thanks crashtec and BondoKing for the help!
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Old 08-12-2007, 09:27 PM
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Glad you have had some positive results! I will admit to you that I still mostly let the gun control me instead of the other way around, but I'm getting better. I find that different clears and SS urethanes all need a bit of minor tweaking to get good results, now that you see the difference that can be made, you will find the right adjustments to fit your style. I see when I am spraying that even a quarter turn on the material or fan knob can make a difference. I don't spray with the fan all the way open though, maybe I am doing it wrong, but I see more overspray for no gain when it's wide open on the Iwata. SATA is a different story though, the RP I used wanted that fan all the way open and the pattern was still a bit fatter in the middle at the pressures I wanted to spray.
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Old 08-12-2007, 10:19 PM
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I noticed with the sealer and the fan wide open it was blowing out the middle so I turned it all the way in and then out jus over two turns. I saw some streaking for lack of a better word in the sealer. With the base it seemed better to have it wide open, the same with the clear. I still need some fine tuning but it is alot better than it has been.
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Old 08-13-2007, 06:06 PM
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Could be what your getting with the fan WFO and being more than 6" off panel is a fog. Iwata's want to be up close and personal and "if" you prefer being off the panel further,you'll get the o'spray so some fan shut down is necessary. Along with the psi being over the 16-18 recommended and the fluid cut back some,you'll blow out the middle. I've found the recommended is a "guess" with most air set up's. Until you've used an air cap guage and actually SEEN what your spraying at,you could be off,a LOT.
I found that i needed 20 for the 10 at the cap with MY air set up so some testing is definetly in order for a good pattern,so just because your setting it at the "recommended" does not mean your getting what's needed for the gun to spray "right" or at least the way IT is designed to spray and this is kind of a fault with Hub IMO as air supplys DO differ and he really does not address this issue as much as he should. I was NOT pleased with the way mine sprayed base at the "recommended" and after checking with the cap guage,finally understood "why".
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Old 08-13-2007, 06:17 PM
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the air cap gage is one of the best investments you can make. it really does help a lot.
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Old 08-13-2007, 09:12 PM
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I had checked with the place where I bought the gun about the cap awhile back and they just said there wasn't one available. They suck and I will never buy anything from them again. Where is a good place to get one and about what do they run?
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Old 08-13-2007, 09:20 PM
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Here are the pics hopefully. I did a bumper on an 07 Tahoe today and turned the fan all the way in and then out about 2.25 turns and 2.5 on the fluid, looks alittle better than the Boneville.
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Old 08-15-2007, 06:16 PM
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Quote:
Originally Posted by shine
the air cap gage is one of the best investments you can make. it really does help a lot.
Is there a place online where one can get an air cap guage?
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Old 08-15-2007, 08:56 PM
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I shoot with 2-2.5 turns out on the fluid, and 20ish psi with the trigger pulled, my fan is turned out just past the point where it stops getting wider. The clear goes on slick as glass with two -three coats. Four coats and the wave sometimes starts to appear. I love the LPH-400LV. I shoot with a 1.3 fluid tip and it transfers enough material IMO for the way I spray, I regularly shoot Sikkens Autocryl Rally Black and that stuff is as thick as snot but it's no challenge for the Iwata. I don't have an aircap guage. Schatzy, if you join the SPI user's forum and submit an order to BarryK for the cap I'm sure he'll include it in his next Iwata order. Bob
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Old 08-15-2007, 09:02 PM
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Thanks Bob, that is actually exactly how I have it set now and it is working pretty good. I am a member of the SPI forum and have thought about checking with Barry about seeing if he could get one.
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