Done some revolves but not like this. Designer wants a 7' circular platform, stationary, with an additional 3' radius (and taller) half-donut shape revolving fully around it, to be pushed by performers in both directions at various points in the show. I'm looking for a good+cheap way to track this around the vertical face of the center platform. Attached is my first idea for a track linking the center circle and the half donut together using interlocking rings of UHMW, blue in the detail drawing. Opinions or other ways anyone has done this? I'm unfamiliar with what bending radius is reasonable for a given thickness of UHMW. I drew 1/8" but will that be rigid enough, or too rigid to attach, or can I use thicker and still tame it around the curve especially at the ends for smooth transitions over seams? Tips for using heat in bending? Thoughts on how tight the track channel width should be to the... err... "ring knife"? And how deep?