Parametric Spider Web
by nicholasclewis, published
The OpenSCAD script has some parameters that can be changed to adjust the size and thickness of the web, the number of segments, and the number of webs per segment. The attached STLs show a few examples of how these can vary.
The one pictured was printed with Blue UV happy PLA from UltiMachine (http://ultimachine.com/content/pla-blue-translucent-5lb) and would be very cool printed in Makerbot's glow-in-the-dark ABS (http://store.makerbot.com/plastic/glow-abs-plastic-1lb.html).