waterjet clock rev 4

thingiverse

This 20+" diameter mechanical clock, initially intended for waterjet cutting, can also be laser-cut with suitable materials. The non-CNC components comprise shafts, tubes, and screws securing the front to the back panel. Inspiration is drawn from two wooden clocks (Clock 1 and Clock 2) on www.woodenclocks.co.uk; this design features a second hand absent in the originals. The right-shaft gear interacts with the ratchet and pawl mechanism for winding weight restoration. Instructions are unavailable, but you can explore parts via Solidworks file viewer, while shafts sourced from McMaster. Gears fit press-fit onto shaft sleeves, with hour, minute, and second sleeves nesting on the central shaft. Pendulum weight requirements remain uncertain; alternatively, a motor powered by an Arduino or similar device could regulate speed, ensuring the pendulum's center of mass is at an optimal distance from its pivot for ticking twice per second.