Base Wrinkling

C

cackle

Hello all,

Iam embarassed to ask but here goes..

This is my first full blown base coat job. Started 9 months ago using all SPI products. Sanded to bare metal, used epoxy and 2 k primer (spi).
After shooting base Nov 10th (SPI 2011 white). I had an area with a run so I asked here and Barry said it was ok to wet sand as long as the body was not in direct sun. I accidently sanded to metal, so I mixed up some epoxy and shot the area, I had some left over so I decided to shoot the rockers and door bottoms. After letting it cure, I shot the base again...The edges where the epoxy meets the old base wrinkled, I blamed the epoxy so I sanded it off and shot the areas with 2k primer. After letting it sit, I shot the base again and again the same problem, the wrinkles only seem to appear at the edges where the primer meets the old base. I tried different gun setting, different ratios of reducer( SPI very slow),different air pressures, different SPI Wax removers, different hoses I dont believe it is contamination...Did I wait too long to reshoot the base? I hope I dont have reprime and reshot base. What can I do...I was so close to shooting the SPI Clear!

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Here are some pics of the wrinkles:







So close to finishing...I also activated the base


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Had nothing to do with the epoxy or 2K like you figured out and don't feel bad as this happens to all painters.

When you break through any clear or base that is fresh it is very easy for the solvents to creep under the edges and wrinkle.

Sand smooth.
Spray a medium coat of base and walk away for 30 minutes and then do another and walk away, if you do the first coat to wet or the second or rush the second it will happen again.
 
Thanks Barry for the advice and this forum....I was so frustrated, I was about to sand it all of with 36 grit! I will try the medium coat AND WALK AWAY (which is hard to do!)...
 
cackle;32605 said:
Thanks Barry for the advice and this forum....I was so frustrated, I was about to sand it all of with 36 grit! I will try the medium coat AND WALK AWAY (which is hard to do!)...
Click to expand...

Trust me I do know, cannot tell you how many times I have screwed a spot up by rushing.
 
Thanks for all the relies....I guess Barry's medium coat is my light coat! I tried a fast reducer with several light coats till all the color matched...all is good. Now unto clear coat.....
 
yeah you gotta remember that the solvents in paints is actually like paint stripper so when you have a catalyzed finish thats feathered out to an edge its extremely thin and weak. it cant withstand those solvents trying to bite into it and it just wrinkles. the faster you get the solvents off of the panel in an area like that the better.
 
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