Whitehouse

Im planning on doing one after wanting to change my can back to standard level, iv managed to get some 2mm thick steel from work that i wanna use. I would of thought aluminium would be fine aslong as its a fairly strong grade or a couple of mm thick, i know some types of ally can be a bit weedy.
I wanted to make my own because the slip ons iv seen that hang off the foot peg seem to angle away from the bike and dont look quite right