$10.00Medium Pendulum Wall Clock

myminifactory

This is my medium sized 3D printed pendulum wall clock. The escapement and gears are highly visible. Runtime is nearly 5 days with an accuracy of 1-2 minutes per week. It is designed to be a real functional clock. The overall size is around 165mm by 400mm while being printable on a Prusa Mini or similar sized printer. Total print time is just under 120 hours using around 1kg of filament. Videos of a similar (slightly larger) clock can be found at https://youtu.be/kn1OaGAae5w The design has been highly optimized for 3D printing including the following enhancements:   1) The gear teeth use a unique profile designed to print very smooth running gears. This profile maintains an involute gear shape along the active surfaces with significantly increased clearances to reduce interference. The original concept was defined as "fancy gears" for wooden clocks. This clock expands the principle even further for 3D printing.    2) The escapement has been optimized to provide very predictable performance. Traditional deadbeat escapements do not print all the way to the tip of the ponted teeth. The escapement in this design adds a wide active surface to print very uniformly on any printer. This escapement style may be unique to my clock designs.   3) The dial lettering was optimized to print perfectly using a standard 0.4mm nozzle. I go back and forth between CAD and the slicer many times to ensure clean print widths using a standard nozzle.   4) Gear ratios are optimized to utilize 12 tooth pinions for lower friction. This contributes to the long five day runtime. A few non-printed parts are required to minimize friction and achieve a long runtime. They mainly consist of music wire for the arbors, bearings, common sized wood screws, fishing line, and filler for the weight shell. Most metal parts are well hidden so the clock appears to be completely 3D printed, yet the clock performs nearly as well as a traditional brass clock. A 40 page assembly manual is included along with assembly videos at    Part 1 - Subcomponent assembly https://youtu.be/NduVa_3wJFY    Part 2 - Final assembly and testing https://youtu.be/IOmcpzH5iek Steve