I have a car that is primered. I've already many hours into the body work. I think there are still lots of waves and scratches that can't be seen or felt through the primer(two-part epoxy). Any opinions on putting on a thin coat of paint to make the flaws stand out. Maybe then block sanding it back down for final paint. I'm set on using Imeron as my final finish. Any thoughts?

if you want to see the flaws, just spray water on the car.It will have the shine of paint, and you will see it all. Your hands are your best tool though, I always run my hands over all panels after blocking, you should feel any imperfections. I also always use a guide coat (spray can laquer) fogged onto the car and block the primer/surfacer to easily find problems. Low spots will leave the guide coat, high spots will take the primer off. Fix the problems and block again. After the whole car is blocked, and it looks good wet, its ready to start final paint prep.

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70 chevelle ss396 conv
66 chevelle ss396 hdp/conv
55 chevy prostreet
69/71 camaros
91 formula
TC member #493

We use either black or red DP primer and you can most definately see any defects when working with it. I dont know about Dupont products though. I would think they would have somthing comparible.

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Micky Hale Restorations
69 L-89 Chevelle
68 Biscayne 427/425
34 Plymouth Coupe racecar
ACES #134

I have always wondered how block sanding a surface which is curved both horizontally and vertically will show defects after putting on a guide coat. Block sanding allways hits the "top" of the surface first.

Don't laugh, I want my Malibu to be my best paint job ever and I had considered painting it with a couple of coats of black, finding the very last of my flaws, then gold. Maybe I have too much time on my hands! My stuff has consistently come out better than what I have seen come out of most body shops, but has never been a "flawless" finish. Maybe this would put me over the top, but first I want to try the water trick.

I've always heard to color-sand the car like drptop70ss mentioned. The primer will be a lot easier to sand than a fresh coat of paint. Fog another color of primer over your base primer, blocking will take it all off unless there is a depression (which will look like a colored "spot").

When both my Chevelle and Corvette were painted the shop sprayed a very light darker coat on the primer, block sanded till all the dark was gone, primed again, dark layer, block sanded it, then base coat, clear coat, block sand it and buff.

If it took too much effort to get a spot or area of the dark coat off, they knew they had some more work to do.

Both jobs look great...

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Bill Taylor
TC Gold Member #73
December 1999 Feature Car
www.chevelles.com/feature/december99.htm (http://www.chevelles.com/feature/december99.html)
www.chevelles.com/showroom/BillTSS70-2 (http://www.chevelles.com/showroom/BillTSS70-2)
www.chevelles.com/showroom/leaves2 (http://www.chevelles.com/showroom/leaves2)

Guide Coat
Spray a thin coat of black paint over the entire panel then block sand it. The paint will remain on the low areas.

You only need "Fog" the guide coat on.


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Dale
Lowered '67 Elcamino
ZZ430HP / 4L60
"Canyon Carver"
www.chevelles.com/showroom/elkydriveway1.jpeg (http://www.chevelles.com/showroom/elkydriveway1.jpeg)

uncle P. don't worry i don't think it exists.(The flawless paint job)if it does i have never seen it.

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70 chevelle,400cid turbo400.blue with silver stripes.http://members.spree.com/entertainment/ochrisl/