OK i am sober now and no hangover result
To be fair you know a lot more than me about painting i have no advice for you on that. But i refurbished my m3 wheels. And they had corrosion like yours and i found those little orbital type sander didn't work so well? I brought an attachment for a drill (cant remember the name of the brand?) Its basically a foam wheel on a mandrel that goes into the drill chuck and a sand paper belt fits over the foam. I was able to clean the wheels up really quickly and without that much hard work.
To be fair you know a lot more than me about painting i have no advice for you on that. But i refurbished my m3 wheels. And they had corrosion like yours and i found those little orbital type sander didn't work so well? I brought an attachment for a drill (cant remember the name of the brand?) Its basically a foam wheel on a mandrel that goes into the drill chuck and a sand paper belt fits over the foam. I was able to clean the wheels up really quickly and without that much hard work.
I'm glad someone agrees! Seems to be dieing off lol.










