What is a common method for cutting complex shapes from sheet metal?

Using a nibbler is an effective method for cutting complex shapes from sheet metal. A nibbler operates by removing small bits of metal in a controlled manner, which allows for precise cutting along intricate curves and angles. This tool is particularly advantageous for delicate work where maintaining detail is crucial, making it suitable for tasks that involve detailed layouts or patterns.

In contrast, welding is a process used to join metal pieces together rather than cutting them, and using a shear is more suited for straight cuts rather than complex shapes. A metal brake is primarily used for bending sheet metal, not for cutting. Therefore, the capabilities of a nibbler align closely with the need to cut intricate designs effectively.