Mechanical round bending machines are machine tools used for bending metal sheets and tubes. These machines are usually designed for smaller workpieces and work by using rollers that pull the sheet or tube between them, thereby bending it. Mechanical round benders are usually easy to operate and do not require extensive training. They are also usually relatively inexpensive compared to other types of bending machines, such as hydraulic or CNC-controlled machines. However, mechanical round bending machines also have some disadvantages. For one, they can only apply limited forces and are therefore not suitable for thicker material or larger workpieces. For another, they also cannot be as precise as other types of bending machines, which can be a problem in some applications. Overall, however, mechanical round benders are a useful machine tool for smaller workpieces and simpler bending applications.