BostonCraftWorks is the most comprehensive site on the internet for kaleidoscope kits and parts for hobbyists, artists, students and everyone else! Other crafts too!
Brass Tubes
Solid brass tubes - very strong - 1mm thick. You can stand on these and they don't bend at all. 3 inches long (1/2 inch diameter , 6 inches ong (1 inch diameter), 9 inches long (1.5 inch diameter) and 12 inches long (2 inch diameter).
