Home Miter Cutting Miter Cutting Miter cutting involves the cutting of metal parts at a certain angle. Metal Supermarkets offers miter cutting on different angles for metal shapes such as angle, tube and channel. The most common kind of miter cut is a 45° angle that is generally used to form a corner, just like a picture frame. Metal Supermarkets can provide miter cutting services at many stores through our network. To learn more about our miter cutting services, call, email or visit one of our 100+ locations across North America.