been thinkin of makin some myself, out of road sign of course, watched a set on ebay last week go for 90 sum bucks, they were sheet aluminum, with holes drilled, and all the bends and mounting tabs, didnt look like there was any welding involved, i have also seen some sheet metal ones one here, but they were pretty cheesey, and some guys expressed concerns about the metal edges cutting your leg or foot off in a crash?????