I used jumbo paperclips for added strength. These jigs can be used as a 3 step bending process. You will need two M4x8 (or longer) socket screws and nuts. Print 2 of Bend1, and 1 of Bend2. You will also need pliers to help with bending. A pair of round nose pliers is also helpful. The photo shows the three stages of bending from top to bottom.