This clock is named “Swoopy” and was designed by Clayton Boyer. It runs silently thanks to a double arm mechanism. An 8 pounds counterweight triggers the entire mechanism. A pendulum swings back and forth every two seconds. Building this clock requires some precision tools. A scroll saw is a really useful tool when it comes to cutting the gears. However, a CNC can also be used for a quicker process. Working precisely will lower the overall friction of the mechanism and therefore lower the mass needed for the counterweight.