Seeing this curb roller machine shape messy cement into a smooth curb is so satisfyingCasey Chan10/16/15 4:00pm13242EditPromoteGo to permalink Ah. When life gives you a mess, just use this curb roller to smooth things out. It packs and flattens and smoothes any thing it meets. Just look at how kludges of cement transform into a perfectly shaped curb after the roller gets its roll on. It’s like the world’s strongest rolling pin but for cement and not baking.