Got kind of a weird question.
I believe I saw a pic on another bike forum (I think Rat Rod Bikes but I can't remember) that had a cruiser with a handlebar made with copper tubing. I haven't seen a seatpost made with copper yet but is this material too soft? I can see doing a handlebar somewhat since there is not so much weight on but I was wondering if a copper seatpost would be doable (I weigh about 185 lbs). I'm wanting to make a layback seatpost for my cruiser since I can't seem to find any for sale anywhere.