I've heard tell that acetone from the orange box (and other affordable
suppliers) is reclaimed and may contain impurities that will do bad things
to the epoxy. Maybe just water to get rid of the amine blush?

Roger

http://home.earthlink.net/~derbyrm

Yes, I intend to wash it properly before sanding. After sanding I am going
to clean it with Acetone before I apply the primer. I plan to use a two
part Epoxy primer from Jotun. (www.jotun.no). According to their
information I can apply anti fouling bottom paint on the primer after
10-12 hours and before 3 - 7 days, depending on the temperature.

I do beleive you heard incorrectly. The H.D.'s here in So. Calif sell
Klean-Strip acetone (product code GAC18).

It has not been reclaimed (and at nearly $13 / gallon, it %$#@ well
better not be!).

I tried a batch of reclaimed acetone once (bought from the local
wholsale glass/resin supplier) and you could tell *immediately* that
this was 'different' - it felt sticky.

The Klean-Strip does *not* exhibit this obvious symptom.

MW