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Old 05-14-2010, 02:22 PM
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Problems With Finish...

Hello ALL! I have been trolling the forums for a while and i painted a car a week ago... I ran into 2 problems...


The hood had like 2 streaks in it... (I am assuming it was not enough overlapping)

The other was...

The doors had like a "sandy" look to them... They felt smooth, but... looked sandy. I tried wet sanding it and it didn't improve much.

Anyone know why the 2nd problem arrose and if my assumption was correct for the 1st one?


This is the car i painted after wetsanding and buffing...

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Old 05-14-2010, 06:57 PM
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Single stage or BC/CC ?
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Old 05-14-2010, 09:19 PM
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That car was a bc/cc. Nason r-88 and 496-00 clear mixed to proper %s.

I am regulating 90@ tank and 32-35 at the handle.

Using the harbor freight guns until I make more for a sata.
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Old 05-16-2010, 05:06 AM
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I wouldnt worry about a Sata right now, Devilbis has some great guns at 150.00- 200.00
The streaks in your hood can be eliminated by X 'ing or cris crossing the pattern on the last couple coats of base (Nason is bad about streaking but its easily solved...

The sandy look is most likely dry spray or over spray from the roof it can br fixed by lightly sanding with 400 and recoated with a couple more caots of base...before clearing...
BUT ...the car looks pretty darn good to me. all you need is a little more experiance laying down base... Nason is kinda tough to be starting off with for all the reasons you described....Chroma base is more expensive but much easier to use...

I'd get a devilbis gun for my next job ,That might just cure ALL your problems..
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Old 05-19-2010, 03:50 PM
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Quote:
Originally Posted by deadbodyman
I wouldnt worry about a Sata right now, Devilbis has some great guns at 150.00- 200.00
The streaks in your hood can be eliminated by X 'ing or cris crossing the pattern on the last couple coats of base (Nason is bad about streaking but its easily solved...

The sandy look is most likely dry spray or over spray from the roof it can br fixed by lightly sanding with 400 and recoated with a couple more caots of base...before clearing...
BUT ...the car looks pretty darn good to me. all you need is a little more experiance laying down base... Nason is kinda tough to be starting off with for all the reasons you described....Chroma base is more expensive but much easier to use...

I'd get a devilbis gun for my next job ,That might just cure ALL your problems..

--- I spoke to my local paint dealer, they are real cool there. I was telling him about my problems and the set up i am using... He said it simply sounds like i am just running the gun too dry...

He said psi for the guns i have are all with in spec and he said along with running it dry, red isn't the easiest color to cover with.

but... i am painting another car tomorrow so... ima try again but run the needle further out so put down more paint.

keep you all informed.

he also rec. the guns he has for sale there... a Sharpe Finex 3000 it kinda reminds me of the harbor freight guns...
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Old 05-19-2010, 04:02 PM
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screw your fluid tip in all the way( you wont be able to pull the trigger). Now back it out 2 1/2 turns. You should be go to go. Then it will just be MINOR adjustments from there.
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Old 05-19-2010, 04:19 PM
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screw your fluid tip in all the way( you wont be able to pull the trigger). Now back it out 2 1/2 turns. You should be go to go. Then it will just be MINOR adjustments from there.
--- Is that just a general rule of thumb for all guns? Idk how mine is set exactly, but when i sprayed the car... i was afraid of the runs and what not... so i turned the fliud amount down so it came out as like a finer mist... im still new to the painting scene (i went to school for it years ago and im just getting back into it) and just have to get used to laying it down thicker.
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Old 05-19-2010, 08:40 PM
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Quote:
Originally Posted by Mfoehrkolb
--- Is that just a general rule of thumb for all guns? Idk how mine is set exactly, but when i sprayed the car... i was afraid of the runs and what not... so i turned the fliud amount down so it came out as like a finer mist... im still new to the painting scene (i went to school for it years ago and im just getting back into it) and just have to get used to laying it down thicker.
Yes. Basically what you have done is limit your film thickness and you are not getting coverage. You need to set the gun here and adjust your painting speed. If you were afraid of getting runs, it sounds like YOU need to speed up. There are some adjustments that you will have to make to your TECHNIQUE. The gun can only be adjusted so much. You don't want to be in the booth painting for 2 hours just to get one coat on. Don't be afraid of getting a run, it can be fixed easily enough. That is how you will get experience. Learn from your mistakes. It is just PAINT.
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Old 05-20-2010, 08:40 PM
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Originally Posted by Underground
Yes. Basically what you have done is limit your film thickness and you are not getting coverage. You need to set the gun here and adjust your painting speed. If you were afraid of getting runs, it sounds like YOU need to speed up. There are some adjustments that you will have to make to your TECHNIQUE. The gun can only be adjusted so much. You don't want to be in the booth painting for 2 hours just to get one coat on. Don't be afraid of getting a run, it can be fixed easily enough. That is how you will get experience. Learn from your mistakes. It is just PAINT.
--- i sprayed a mk4 jetta today, and i adjusted more aggressively. I set it how you said, but it was still too thin.

I think i have the material setting 3.5-4 turns out... the fan is about 8-10 in high... I still had to slow down some (slower than i would like to move naturally) and my psi was at 40 closed and 34-35 open.

i used chromasysteme 99k black, and nason panel clear.

As long as i slowed down i had good coverage and good layout. Seemed a bit orange peely but thats to be expected with the guns i am using.

Nothing that cant be sanded out. No runs on the car and no streaks...


The only problem i had was some body work on the trunk i can still see kinda...

I did the finishing apoxy, then i sealed it, and bc, cc...

I didnt have any primer left to primer it, so i just sealed it... you cant see the apoxy but you can see like... the lines from where it ended and met (even knowing... it was perfectly smooth to the touch) i had it blended perfectly.
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Old 05-21-2010, 05:51 AM
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That sounds like your gun. You can't expect to get good results from cheap equipment. Jump up to a Devilbis and those problems will go away. I shot with a Sata for years, But used a Devilbis Plus at my last job. It will be my next gun. Don't get me wrong, I still use my Satas, but I wont BUY another one. The Devilbis actually shot better and was HALF the price. I spray fast and love the way the Satas are. Once I tried the Devilbis, I was VERY impressed. I wish I would have tried them before I bought my last Sata !
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Old 05-21-2010, 07:17 PM
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Yup.... Agreed...Devilbis is a great gun.After useing Satas and Iwatas for for the last fifteen years and swearing by them ,I used a devilbis a couple weeks ago and really loved it ...It'll be my next gun too...Satas are great for every day use and hold up for a couple years but if your only going to paint occationally get a devilbis....just as good....
My style is ,fluid set wide open and go like heck ,use the trigger to adjust the flow,for edges and and lighter stuff...
Spend a little cash (at least a 150.00) on a devilbis and you'll know its not the gun giving you grief....
Runs...(flow indicators) are good ...you have to walk on the edge of getting runs when you paint so if you dont go over the edge you'll never know where the edge is.

Lay it down just like you want it to look....and go like he'll.....No sand,No buff...Except for the really nice stuff (show jobs)...
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Old 05-21-2010, 07:31 PM
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what do you guys think of the startingline guns, i like the look of this kit
or would the finishline gun be better?
or did you have a different devilbis gun you would suggest
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Old 05-21-2010, 07:51 PM
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Those are too cheap ...Dont get them..
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Old 05-22-2010, 06:12 AM
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Quote:
Originally Posted by matts37chev
what do you guys think of the startingline guns, i like the look of this kit
or would the finishline gun be better?
or did you have a different devilbis gun you would suggest
I used the Devilbis PLUS. The one we had at work was a 1.4 tip because we shot alot of single stage. It would lay clear down like glass.
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Old 05-22-2010, 08:12 PM
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It kind of sounds like not enough air pressure to me. Sounds like the paint is not atomizing enough and spraying balls of paint. When you slow down and put more product on, you get deep orange peel.

Adjust for more air pressure.
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