its ment to be put on 5/16 threadrod with bearings on each end you can stack this spirialing . 100+ watts combined with http://www.thingiverse.com/thing:633603 all you need is a frame and some gears. looks neat in the sun kinda sparkles. I have not yet printed this please wait for a confirmed print unless you feel like a challange.

if its to be used for hydropower do not put directly in the water let it float on the surface in a tiretube or something. the little spokes on the top look a bit lacking too, will try and fix soon.

it could be done with basic tools and materials on a solid 2" x 2" 4' stick and pop bottle caps screwd into it with bearings or something on the ends too bushman style (not recommended though).

v6 looks good still need to print though