I think he means wet sand and polish/buff.
If you want a seamless rock chip repair you'll need to level it out with the surrounding surface. I'm not sure how the airbrush guys level things out, or if they do it at all, but I fix chips the way sts describes.
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Ken
'68 GTO - 464 - Ram Air II heads - 236/242 roller - 9.5” TSP converter - Moser 3.55 Truetrac ( build thread | walk around)
'74 Ventura 350
'69 AMC Javelin SST
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