wire wheel,blasting is all too much work for me
bad enough i put hrs upon hrs in scraping undercoating
the little harbor tumbler will work just fine
its only real draw back is its small barrel size
so you can only do a little bit at a time.
you just need to know the right media to use.
i use the green pryamids and a little purple degreaser with water and change the water out a few times as its going
then after that, i throw them in walnut shells for a day
they all look like new when done.
i have more then 6 cars worth of nuts and bolts
so i stepped up and bought one of these badboys off
amazon for 120 bucks

http://www.ebay.com/itm/NEW-Thumler-s-Tu...=item4cfef6cb44