I had both for a while jones and sbc. I made my templates on the sbc machineout of sheet metal. I can cut a tire on the sbc and then send it to larry and have him make me a template for my jones cutter.
Jerry doesn't make the SBC cutter, he makes a copy of it....but either way, you should be able to get ahold of him easily enough on here...I think his user name is torg37. He was on here just yesterday.