I am selling the ROP I made for a friend who never came through to buy it. I am selling it for 35$. I got the same materials Supra suggests, but I got them at a going out of business sale at my local hardware shop. They had all kinds of random shit I was amazed. No wonder they went out of business, who the fuck needs 99.9% pure zinc rods? Honesltly, besides us =D