Each part of this pendulum wall clock was crafted from raw metal or plastic stock. The frame is made from clear Plexiglas so the movement can be observed. The gears were cut from billet aluminum. Builder Ken Nobel is a machinist and instructor, and the clock was a fixture in the Mira Costa College machine shop for 20 years, keeping time year after year. Ken made a special case-hardened gear tooth cutter using the Wellman’s Odontograph to cut the teeth on the larger gears, while using standard cutters he had on hand for the smaller gears. The weight is crucial to proper function of the clock, and the proper amount of lead was arrived at through much trial and error.