Runs in single stage will universal hide them?

E

esahlin

Ive shot the shell of my car with about 5 coats of single stage and on the last two coats I got a few large runs. Ive been sanding the single stage with 800 wet and used some 400 dry for the runs to prepare for my universal clear application (I plan on 3 coats of universal then sand with 600 dry then 3 more coats universal). Ive sanded the runs in the single stage about as far as I dare to go before I sand through.....but if I run my fingers over the runs I can still slightly feel them. If I look at them from an angle after wiping them with wax and grease remover (to mimick clear coverage) I can see a bit of the rise of the runs.

I am wondering if the 6 coats of universal will help hide the runs? This is my first time painting so Im not sure how much the runs in the single stage will telegraph though the clear. THanks
 
Use a hard block to level the runs, I have a selection of plexiglass sticks and blocks in various sizes that work well for leveling imperfections like runs, hardwood and aluminum will also work. When you wipe some solvent based wax and grease remover over the sanded area take note if there's any difference in color in that area. Sometimes with singlestage pigment will settle before the paint kicks and sanding it will make a change in color-in this situation you would need to shoot more color over any sanded areas before the clear goes on.
 
The clear will not hide them, you can sand the clear flat where it now rises, but you will see the basecoat defects anyway.
Like looking into a a calm lake, the surface is smooth but you can tell the details on the bottom. Well at least if it is a nice clear lake, lol.
 
lol.....I had a bad feeling I was false hoping. I'll see if I can hard block sand the runs some more. If not maybe more sanding and a couple more coats of color.
 
Is your single stage a solid color, or metallic? I recently shot PPG Cranberry Red single stage, which is a solid color. I too had a few runs in my paint. These were located on the center right portion of my hood (where it bumps up), and was apprehensive because reds can change a shade lighter after sanding. However, the runs sanded out fine and the color remained unchanged. I shot my initial three coats of SPI universal clear over everything, and it turned out fine; I will shoot three more coats this week. It really is the best clear coat on the market!

I don't think single stage metallic paints are as forgiving.

2012-09-26 clearcoat, hood stripes_009.jpg
 
Why are you guys piling on single stage if you are going to clear coat the panels anyway? Wouldn't basecoat be more forgiving? It sure seems easier to shoot. Not being critical. I'm a rookie and just wondering why you are taking this approach? Thanks
 
If it's a quality singlestage the overall paint job will be more durable than bc/cc
 
My color is a solid flame red.....and I used the advice given by Bob H here and used a hard block and further sanded my single stage runs a bit further. I finished my initial 3 coats of universal clear and am currently sanding that for the last three coats. It looks like the runs in the single stage will come out fine. After I sand my single stage flame red (with 800 grit) and then clear it, it turns out a bit darker (less orange cast) than as shot right out of the gun. I like the red a bit darker anyway....so I am very happy with it. Nice pic RalphL.....turning out nice!
 
Can you give an estimate of the total amount of sprayable UV Clear you will use for 6 coats? (gallons or quarts?). And what car you painted. Thanks very much.
 
In my case....I am spraying my car apart and have had to redo one fender and one door (after I already had 6 coats of clear on them). Its a 68 firebird and I will be using about 3 sprayable gallons of UV clear. This is my first time ever painting....so take into account that I dont know what I'm doing.
 
PatG;24626 said:
Can you give an estimate of the total amount of sprayable UV Clear you will use for 6 coats? (gallons or quarts?). And what car you painted. Thanks very much.
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Pat,

For my '72 Camaro Z-28, to get six coats of Universal Clear, it took 2.5 sprayable gallons (5 quarts clear and 5 quarts activator).

Ralph
 
Thanks Esahlin
Good info. I'm painting inside and out of a Triumph TR3. Smaller car. I used 48 ounces sprayable to lay down two coats on the bottom of the car. I'm sure the inside of the car will require about the same or a bit more. Then, I'll probably need at least a sprayable gallon to lay down 4 coats of UV clear on all the body panels. I've got about 3 gallons sprayable so that sounds like I'm in good shape. Best of luck with your project. Pat

esahlin;24631 said:
In my case....I am spraying my car apart and have had to redo one fender and one door (after I already had 6 coats of clear on them). Its a 68 firebird and I will be using about 3 sprayable gallons of UV clear. This is my first time ever painting....so take into account that I dont know what I'm doing.
Click to expand...
 
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