Basic double pendulum

thingiverse

Tired of Your Fidget Spinners? Build a Cool Double Pendulum Instead! Are you fed up with fidget spinners? Put their bearings to use and create an awesome double pendulum that showcases the fascinating theory of chaos. This clever device demonstrates how sensitive systems can be to initial conditions. A great example is weather - a slight change in temperature or humidity can lead to drastically different outcomes. Similarly, if you swing your double pendulum with even the slightest variation in initial arm placement, you'll witness an entirely unique pattern emerge. To build this remarkable contraption, you'll need four standard 608z roller skate bearings (often used in modern hand spinners), a 2020 aluminum extrusion (any 20mm x 20mm pole will do), and a base that fits your needs. My base is a sturdy 360 x 200 x 18mm pine base, but the heavier it is, the better. Don't forget to add washers and screws to keep those arms securely in place. The middle section simply fits between the two arms, ensuring they stay stable and functional. So, what are you waiting for? Get creative and have fun building your very own double pendulum!