Wave Pendulum via 3D printing

thingiverse

This is derived from the writings of Paul Liu, in particular: http://hippomath.blogspot.com.au/2011/06/making-your-own-pendulum-wave-machine.html Still a 'work in progress' but can be seen in action here:http://youtu.be/LVjnVPLGuDc I made the 'bobs' like little pill bottles so weight can be added - which I've yet to do though I do have some lead shot on order. I hope that the shot will make the bobs swing more accurately and reduce the tendency to crash into one another. Once I have the weights then I will retime each pendulum again (the centre of gravity will have changed) and do it more precisely which I hope will extend the time that the bobs swing in a coherent manner. Instructions Because this is rather large for 3D printing (approx 550mm wide and 440 mm high) I've used timber for part of the construction. The upper leg that supports the topmost piece of timber I printed 'upright' using support for the section that supports the timber. The other legs should be layed down from printing. Hopefully the way to assemble is clear from the photos. I mounted the pendulums in batches of five leaving the cover rail a little loose so the cord could be lengthened or shortened by pulling in the appropriate direction. All plastic to plastic holes are for 3mm screws. Made on an Ultimaker using DiamondAge PLA