Original poster: "by way of Terry Fritz <teslalist-at-qwest-dot-net>" <CTCDW-at-aol-dot-com> Hi Frank, all, US Plastics supplies acrylic tubes up to 6 or 8 inches. They do have a web site, possibly usplastics-dot-com. A word of warning though... you WILL pay for it. not cheap. I think it comes in 5' lengths. I bought a 5" form a few years ago and it was $60 or so. Chris W