The pipe bender is a special tool for bending metal pipes with a diameter less than 20 mm The structure of the pipe bender is shown in Figure 9-3. When in use, the metal tube to be bent is placed between the fixed wheel with the guide groove and the fixed rod, and then guided by the guide groove of the movable rod, the fixed rod is fastened, and the handle holding the movable rod is rotated clockwise to bend the tube into a specific shape in the guide groove.
Figure 9-3 Pipe Bender
Note: the force should be uniform during operation, so that the movable handle can rotate smoothly and prevent the pipe from bending or cracking. Elbow springs as shown in Figure 9-4 can also be used.
Figure 9-4 Elbow Spring