Home Notching Notching Notching involves cutting notches in metal. A press is utilized to punch notches with a rectangular die. An example of notching would be taking a square piece of plate and notching the middle of the top and bottom without cutting all the way through to make an “H”. It can be applied to almost any kind of metal and it is often used on sheet and plate and sometimes tube and pipe. Notching tube is often used to join tubes to form a specific joint which is then usually welded. An example of notching would be in the construction of bicycle frames. We can provide metal notching services throughout our network. To learn if the Metal Supermarkets near you offers metal notching services, call, email or visit one of our 100+ locations across North America.