If you ever want to 'shop' aluminum and are in the Colorado front range area (north of Denver) stop in at Alreco -- its 5 acres of aluminum -- scrap, sheets, new, old, extrusions, drops, plates, absolutely every size and shape you could think of. There is a solid chunk sitting in the yard that is 6' in diameter and 4' tall! All used stuff and drops are sold by the pound. There is a 4'x32' trough piled 2' deep with 2" diameter cutoffs 2-3" long -- I pick up a dozen or two for handles whenever I pass through. Picked up enough plate and I-Beam to build two rails a few years ago for a couple hundred bucks. Old fashioned business... cash or check, no shipping that I know of.
Alreco
11299 Brighton Road
Henderson CO 80640-9335
Phone: (303) 287-7210
Rod