Straight copper pipe, at least 30cm long. 15 or 22mm diameter central heating pipe works well. (A hardware store may lend you a piece for a minute just to try this out) A circular neodymium magnet ...

and most non-metallic pipe. The easily replaceable blade is designed to cut tubing of 1/8 to 1-3/8 inches (3-35mm) in diameter. It can also cleanly cut tubing materials such as copper, aluminum ...

copper pipe. Cut the repair sleeve from the 12-in ... Clean the sleeve's inside edges for soldering with a 3/4-in. diameter ...