I hit an aluminum bench over the summer, and did everything possibly to not catch an edge, detuned edges, I even leaned back a good bit, close enough that I could hav slid out on my hip. But I still caught an edge. It was fucking painful. Stay away from aluminum.
dude, if i was abe lincoln in the 1860s, and a bunch of southern states decided to break off, id be like, dude, fucking take them, we dont care.-mnscratchskier