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					Originally Posted by jmk  The black is the e-coat.  You're right, that is where most of the rust prevention is and it is also where the lead and cadnium are.  Don't sand it if you can avoid it.
 Also, do not spray this outside.  E-coat cannot handle any UV.  I've seen e-coated car bodies left outside start to chaulk in 8 hours.
 
 That checking would be really strange on an OEM finish.  Was this car refinished before?
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 Thanks for the tip - unfortunately I've got no choice but to carry on with my outside spraying for the big bits at least... If I can't get a good finish I'll take it to a spray shop (honest I'm not so proud that I'll refuse to admit defeat!).
Was the car refinished before? You bet ya! I took the car to a local spray shop to get a quote for the roof and the owner was quite rude about the standard of the refinishing work... you live and learn... I figured it was a good car to learn to spray on then...
...one thing is for sure I'll be looking more critically at the paint work on my next purchase now that I know how long refinishing takes.