Gun setting for ********** universal clear ?

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PostPosted: Tue Jan 27, 2015 12:04 pm
I can find settings that guys use for the high dollar guns when shooting ********** universal clear but no information for the Devilbliss 670 Plus. Any of you guys that use the 670 Plus ever shoot ********** universal clear ? What settings did you use ? On the ********** site they do say to use a 1.4 tip The Devilbliss site says 1.3 or 1.4 tip. As far as spray pattern size and air pressure at the gun I can not find any information about shooting this clear with the Plus gun. Thanks for any information you may give me.

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PostPosted: Tue Jan 27, 2015 9:35 pm
Generally your paint gun settings for fluid and fan stay about the same. For clear you need to jack the air pressure at the gun up some. Follow the paint manufacturer's recommendation on tip size.
I have not used the 670 so I cannot say for sure on that gun but my guess would be around 26 psi at the gun with the trigger pulled.
You want to be pay close attention to keeping the gun at the right distance and perpendicular to the panel. Keep your speed about 1' per second and your overlap about 50%.
Everyone sprays a little different so you may need to adjust your speed until you get a wet coat.
I like to use slow reducer so the clear has a chance to flow.
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PostPosted: Wed Jan 28, 2015 12:58 am
That gun works best with the fan and fluid controls set wide open and start around 30-35 psi.4-5 inches away from the surface 75% overlap also works well with that gun.If you can spray it the way you want it to look and your gun is atomizing properly there will be hardly any flow.If you rely on flow your asking for problems.........

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PostPosted: Wed Jan 28, 2015 9:55 am
Jayson m wrote: . . . .If you rely on flow your asking for problems.........


Jayson, would you clarify that statement? Clear is supposed to flow for nearly everything I have read.
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PostPosted: Fri Jan 30, 2015 8:10 pm
IMO there really shouldn't be much "flow" if the gun is set up right so it atomizes the clear you will get a nice smooth thin wet coat with minimal flow.Many people think that if you hog on the clear thick or peely that it will magically flow out and become smoother.If your not careful it can flow into runs and solvent pop if that makes it easier.In short you want to spray you clear how you want it to look.Once a person becomes experienced you will be able to "control" the paint with technique/proper atomizing spray gun.If you are hoping for flow it can become harder to control what happens.Its not really too hard to spray an ms or high voc clear to be smooth,but once you get into high solids and low voc clears this will be easier to understand as most of these clears hardly flow at all.They can be tricky to spray depending on brand.

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PostPosted: Fri Jan 30, 2015 9:07 pm
I spray it on very much like you described but I have watched it "lay down" while it is flashing and to me that is flowing.
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PostPosted: Fri Jan 30, 2015 11:17 pm
Like I said before,it depends on the clear and they don't all act the same.You have used ********** for many jobs so you know how far you can push it and what you can get away with.I have used ********** universal before and it is a very easy and forgiving clear to spray due to being good old fashioned high voc clear.Try some other brands,HS,low voc and you will see what I mean as some of them have little or next to no flow,thats why its important to spray them like you want them.

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PostPosted: Sat Jan 31, 2015 9:28 am
Okay, so you weren't challenging my answer to the OP who was asking specifically about ********** clear. You were just making a point on not coming to the place where a painter has to "rely of flow" to get the clear to look right.
I get it. Thanks.
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PostPosted: Sat Jan 31, 2015 2:06 pm
Exactly,thats all it was.I have used the old plus for a couple of years in a production environment and those settings worked for me.



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PostPosted: Sun Feb 01, 2015 2:53 pm
I agree with Jayson the 670 Plus and the MS is just as you explained it doesn't want to flow out and its hard to get it too Its very important to spray it the way you want it to look.

I found best way to use it was to set gun up for 6'' 1 sec blast with out running and using 75% over lap just as you have said I thought I was crazy when I was doing it but 50% wasn't cutting it and 75% looks good your putting it out so heavy it gets real easy to get Gravity indicators.
I'm using a Hi flow fittings and cant remember pressure but start about 42 and adjust down from there when tuning gun for 6 inch 1 sec blast with out running or trapping If I check some of my notes I would bet I'm in 35 psi range as Jayson said.

I used to set the gun up to spray wide open with the fluid tip and needle doing all the work as I would set the needle two full turns out from fully closed and just let the gun do all the work this would make the gun run me and the MS would either run or be to dry on vertical areas I struggled having to take my time and be very careful.


OP wanted tip sizes too
I use 1.4 for clear, 1.3 for Base coat
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