I've never made my own 'chipped paint' layer and looking at Step 5 from BLOWHARD's weathering tutorial (http://www.simmerspaintshop.com/foru...eathering-478/), it looked like a lot of work to do by hand.
However, I figured out a way to generate random 'chips' along panel and hatch lines.

It only takes a couple of minutes and I think it looks pretty good:





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