Where did the old threads on gun settings go??

6

6t7goat

I recall on the old forum a bunch of sticky's for Gun settings for various guns and different SPI products. This was very helpful. Is it still around? If not could we start a new one?? Thanks for all the great info here!!!!
 
Thanks 68coronet R/T I have a devilbiss 670plus gun and was looking for some settings that people are using for the universal clear.
 
Okay here it is. This is just some stuff I copied and pasted so hopefully none of it was copyrighted and nobody gets mad at me. :rolleyes:

Barry K
Wall regulator set at 100 or more.

Iwata LPH 1.4.
Fan wide as can without center blowing out.
4" from panel.
Fluid 2.5-3 turns out depending on speed of painter.
Air 26-32 psi at the gun depending on air lines and compressor.

Sata RP 1.4.
Full fan.
2 3/4 turns out on fluid.
32-36 lbs at gun.


65 Comet:

Iwata LPH 400LV 1.4 tip
22 psi
Fan - 1/4 turn back from full open...no real reason for the 1/4 turn back other than habit...I never turn knobs against the stops...
Speed...about a foot per second
Fluid knob - about 1.5-2 turns from bottom (following Barry's gun setup guidelines)
Slow (885) clear activator
4-5 inches from surface


JimC
Should be about 3.5 turns out on the fluid and 20 psi. 4-6" is right.


Shine
iwata lph400
fan wide open - turn in 1/2 turn
fluid 3 -3 1/2 turns out
pressure 20 -24 lbs
this is a starting point , from there you adjust to your speed and distance from panel.
this is for uv clear.



JeremyB

Fan all the way open.....about 25-28 psi......fluid about 1.5 turns in from all the way out.


HUB:

LPH400LV - Clear:

Inlet pressure - set at 16 to 20 PSI with trigger full back and air flowing
Material control knob set at 3 to 4 full turns open from the closed position
Fan Control knob - set to achieve an 8 or 9 inch spray pattern at a 6 inch distance.
Material control knob - set at 3 to 4 full turns open from the closed position
Spray distance - 6 inches or less
Spray speed - Fast
Pattern overlap - 50 to 60 %

ALWAYS spray perpendicular to the surface and ALWAYS spray into a wet edge.
Material to Air ratio is very important.
Too much will result in a poor spray pattern, dry spray, excessive over spray and worst of all poor film build.
Too little will cause orange peel, puddling, runs, sags, high film build. solvent pop, die back and more.
Always follow the paint manufactures mixing ratios.
Never deliver more material to the fluid tip than you have air to atomize it
The Air to Material ratio is correct when the spray pattern is well formed and the paint is well atomized and the droplets are consistent in size.


LVX:

Material control knob set with 4 threads showing between the knob and gun body
Now with air flowing through the gun and the trigger in the full back position set air pressure at 12 - 16 PSI
Set the fan control to achieve an 8 - 9 inch spray pattern - at a 7 inch spray distance.
Spray speed - medium fast
Spray distance 6 inches or less
Pattern overlap 60 - 70%


LVB:

Install an LVB basecoat air cap on your LPH400LV and use these settings.
Inlet air pressure - set at 8 to 10 PSI set with the trigger in the full back position and with air flowing through the gun.
Fan Control know - set wide open (all the way to the left)
Material control knob - set at 4 full turns open from the closed position.
Spray speed - medium to fast
Spray distance - 4 inches or less
Pattern overlap 70%
NOTE; at 4 inches and 10 PSI the LVB cap will produce a 11 to 12 inch spray pattern. If you want a smaller pattern DO NOT use the fan control knob. either spray closer or reduce the fluid flow.
 
Duk,

I have owned many Harbor Freight purple guns. For the money, they do spray well, for a while. I agree with Coronet, it is a shot in the dark if anything you get from them is going to work, or for how long. If you have a local store and returns are easy, sometimes Harborfreigh tools have their place. I guess it depends how serious you are about getting into this hobby. Now I just use "the purple gun" for spraying epoxy on rub-throughs. It saves a little wear and tear on my other guns.
 
I'm doing my first complete paint job. I bought the purple gun for primers. I bought a new Devilbiss Plus for color and clear. I'm curious how much different the plus will be. How much adjusting will I need between color and clear? I know most guys use a separate gun for all tasks, but I'm limited. Oh, and trust me, I know HF is Taiwan junk. I have a store nearby, and I heard lots about the "purple" gun. Hell, for 15 bucks...
 
I am not sure exactly what the difference is (other than about $25) but HF sells 2 types of purple guns, and calls them both HVLP. I've heard that the $40 one is much better than the $15 one, but I've never tried the cheaper one myself. If you're doing an overall, I would suggest getting the warranty, becasue you'll probably need it. I went to use mine last night and it is out of commission - the air valve that the trigger pushes is leaking like crazy.
 
How do you know where to set your regulator for base and clear? I think IWATA recommends 16psi for the lph400, most everyone seems to be using quite a bit more than that.

Also, what will differ in gun setup and spray technique between base and clear?
 
It really comes down to getting proper atomization. When starting out it is a great idea to tape some masking paper to the wall and adjust your gun for a proper spray pattern each time you get ready to spray. Eventually you will develop an "ear" and "eye" and can adjust based upon the sound of the gun and the droplet size proceeding from the gun. (I am not there yet. LOL)
Each gun produces a little different fan in my experience. The LPH400 puts out a large fan even when held about 4-6" off the surface. You need to get the droplets consistent in size (very fine) and yet covering the entire width and length of the fan - without getting runs. I find what works for me is to pull the trigger full open and count 1/1000th then let off the trigger.
Once you start making some passes you may need to adjust for the speed you spray at.

There are some that claim to get great results at the lower PSI settings but my experience is the best results from an LPH400 1.4 start at 20 PSI with the trigger pulled full open spraying fluid and go up to about 26 PSI.
Some of the pros on here may be able to give you better info. but suffice it to say the regulator at the gun is not the final authority when dialing the gun in. Many in fact dump the regulator at the gun, set the wall regulator for 90 -100 psi and adjust the gun to get it to spray properly.
 
thats true. i use a regulator on the gun...but only as a starting point. for base i'll set my lph400 1.3 to about 20...and adjust from there by mainly listening to the air pressure and doing pattern tests on paper taped to the wall. with my 1.4 w400 (lv) i start about about 30 lbs and do the same process.

biggest thing here is, every paint is different....every gun is different. a lot of factors go into setting up the gun all the way back to the compressor. adjust everytime you load the gun up!
 
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