The light rods were cut from 1/4 brass. These are quite cheap if you buy it in 3 foot lengths at Home Depot. I bought two lengths figuring on making a few mistakes. Using a vise designed to hold round tubing I drilled a small hole straight thru the rod. This is the pivot point that the pivot wire will go thru. The two larger holes near the end are for the push pin. I have two holes in them so I can move the pins to change the sequence that they move in. The reason I made holes was to insure that the rods have no side to side movement. I machined a small step to the push pin that fits into the hole. When you look a the other pictures you can see how it all comes together.