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Help needed on Touching up a road chip

Nolan-TennesseeNolan-Tennessee
What am I doing wrong? I'm trying to touch up a road chip but the touch up paint won't stick to the primer or original paint. I sanded an area about 6 inches around the chip, primed the chip to build it up, allowed over 24 hours for the primer to dry. Lightly sanded the primer, cleaned area with a pre-paint wash, applied enough layers of base coat to match original color. Sprayed 3 layers of clear coat 24 hours after base coat. Waited 24 hours and then used 3M rubbing compound. Still the paint I applied can be chipped away with a fingernail, peels off like cellophane. I removed it all again, sanded with 220 grit, re-applied base and clear coat as I did before, waited 2 days before using the rubbing compound, same thing again. I had waxed the car a month or so before attempting the touch up with Mother's Carnuba wax, I'm sure the sanding and pre wash removed it but not absolutely positive. Any ideas?

1957 Specialty Auto-Sports(Cabriolet)

Loudon, Tennessee

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Nolan-TennesseeNolan-Tennessee
What am I doing wrong? I'm trying to touch up a road chip but the touch up paint won't stick to the primer or original paint. I sanded an area about 6 inches around the chip, primed the chip to build it up, allowed over 24 hours for the primer to dry. Lightly sanded the primer, cleaned area with a pre-paint wash, applied enough layers of base coat to match original color. Sprayed 3 layers of clear coat 24 hours after base coat. Waited 24 hours and then used 3M rubbing compound. Still the paint I applied can be chipped away with a fingernail, peels off like cellophane. I removed it all again, sanded with 220 grit, re-applied base and clear coat as I did before, waited 2 days before using the rubbing compound, same thing again. I had waxed the car a month or so before attempting the touch up with Mother's Carnuba wax, I'm sure the sanding and pre wash removed it but not absolutely positive. Any ideas?

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Alan MerklinAlan MerklinDrclock - Elkins, West Virginia Supporting Member
First be sure that you are using the correct touch up ... i.e. enamel for enamel. Best not to force dry or work with a hot surface always best to do this out of direct sun.
Sanding will not remove wax, all that does is heat the old wax and further beds it into the sanding scratches.
A 50/50 mix of ammonia and water will remove any wax residue, then lightly sand the chip with 320 around a Q' Tip, dab in gray primer (do not use the red as it can easily lift.) Let that set up for 1/2 hour then the color is applied also let that set up for 1/2 hour. Top coat with clear. Don't wait hours between the different coats as they will harden over and loose it's adhesion. ~Alan
Nolan-TennesseeNolan-Tennessee
There are two suggestions that I'll look into before going to a paint shop.

1. The idea that sanding doesn't remove wax is very plausible, I've sent off for wax remover sold by the same company that I got the touch up paint from.

2. Heat and humidity are a major problem down here. I wait for the wife to go to work, turn on the window shaker A/C I have in the garage, wait until the garage cools down and then try painting as Drclock suggests. It could be that I was spraying directly in the sun, 90 degree heat, possible the paint was drying even before it hit the car.

For anyone needing touch up paint not available from Duplicolor, here's a the website I located after an extensive search for VW Aluminum Silver LY7M, found it under Audi color chart. The touch up from VW didn't really match and was more expensive.

http://automotivetouchup.com/

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