Customizable Stackable Magic Wand - fixed

Wish you had a Customizable, snakey, spiral-ly magic wand? Here's your chance!

Aside from that, this is an experiment in using OpenSCAD's linear_extrude function, twisting and extruding a circle to form a cool magic rod. I then use the same technique to make screws and screw holes, allowing me to assemble a long magic wand from even a small build area. This technique of making screws and nuts is pretty simple to code and works well. Note that the screws and holes are pointed, so that the holes can print with 45 degree slopes inside (i.e. so no bridging). The wand requires no support to print (unless the wiggles are extreme) and minimal infil - none if you use several layers to make the tops solid.

The way the sphere fits onto the head of the wand also looks pretty nifty, if I say so myself.

Now Customizable!

And fixed. Thanks to alfonso82 for pointing out a problem - one of the threads was generated screwing in counter-clockwise, and the rest were all clockwise. Oops! Than