If you're a typical DIYer, then a right angle grinder probably isn't something you'll use very much. You can rent them at home centers, but for only $15-30, why not just buy your own? They're great for cutting, grinding, and polishing wood, metal, and concrete. They come with metal-cutting blades, but you can also outfit them with diamond blades, wire wheels and sanding disks. Don't have a use for a grinder right now? Buy one anyway; we promise you'll find one.