One thing I learnt years ago from the glass and
awlgrip guys in the yards from St. Thomas to Southwest Harbor: DON''T bother to wipe down with acetone after sanding raw glass,
epoxy,
paint or bottom
paint. Clean with air under pressure and tack rag, if you must. All you do by wiping with acetone, and, yes, I still catch myself doing it occassionally, is spread contaminants around.