400 grit dry for a decent key, paint it, then depending how good you are at painting so how much ripple you need to flat away 400>800>Wet 1200>polish.
No need for primer if you're painting on top of other paint.
@Hefty started
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400 grit dry for a decent key, paint it, then depending how good you are at painting so how much ripple you need to flat away 400>800>Wet 1200>polish.
No need for primer if you're painting on top of other paint.