West Systems 860 Aluminum Etch Kit
A two-part treatment for preparation of aluminum surfaces for bonding
with epoxy. Our research shows adhesion to aluminum is significantly
improved with this process. Also improves paint adhesion.
860-8 Two 1/4 pint bottles (treats about 50 sq. ft.)
860 Two 1-pint bottles (treats about 200 sq. ft.).

http://www.westsystem.com/