Original poster: "Steven Ward by way of Terry Fritz <teslalist-at-qwest-dot-net>" <srward16-at-hotmail-dot-com> Hi, anyone know what the largest VTTC is out there? I havent seen anything larger than John Freau's 4x 833A setup that makes some 38" arcs. If anyone knows of anything larger, i would like to know about it, just curious. Steve Ward.