the tubes were from some fishing jigs i bought at an outdoor expo last year. havnt tried to find the elsware but i would think an art and craft store or even a mil surp, marine or a camping store may have them to store maps. these tubes are rather thin and not hard thick acrylic as you may have thought. also romeo and juliet churchills come in a nice tube that can be used as well.
good luck
happy new year
woodsman <img src="images/graemlins/laugh.gif" alt="" />