It's right to loosen for saw blade arbors. You may be trying left like a normal nut & bolt.

The reason being we'd rather the nut tightens with use rather than loosen and fly about the shop... ;^)

Alter Eagle Construction & Design

http://www.altereagle.com/ | Construction & Design | http://decks-ca.com/ | Decks, California outdoor living | http://kingofcrown.com/ | Molding and finishing | http://installcrown.com/ | Crown tutorial