The simplest listogib for garage use can be made of only two steel corners. Of course, the width and thickness of the metal to be bent will not be large, but the creation of this device is quite simple. This design can be made in an enlarged size using a larger steel corner, a thicker metal will succumb to such a bending machine.
This tool takes up little space and is designed to work in yews, so you can use it when necessary and remove it when it is not needed.