Small 8 Day Clock

myminifactory

SP13 This is my most reliable classic style weight driven clock. It has an 8-day runtime and an accuracy of 1-2 minutes per week. It is a complete re-design of my small pendulum wall clock with a focus on making it easy to build. The only machining required is cutting the arbors to length. All the best features from my newer clocks have been brought together into a small, elegant design. The pendulum components drop into place without glue. The winding key is easier to build and more stable. Multiple size weight shells are provided to allow filling with either lead shot or safer BBs. The bill of materials has been reduced considerably compared to the original design. Every component in the design has been optimized to make the clock easier to build. Parts kits are available at https://www.etsy.com/listing/1692813647 or you can source the items locally (Amazon, eBay, Ace Hardware, etc.) if you prefer. The clock is 6.65" wide by 10.75" tall and 5.4" deep (170mm x 275mm x 140mm). The tip of the pendulum is 24" long (610mm).  The minimum printer size is 170mm by 170mm. Total print time on a Prusa MK3S is around 65 hours using 0.7kg of PLA filament. A comprehensive 40 page assembly guide is included. You can download the assembly guide from https://www.stevesclocks.com/sp13 if you want to see the steps ahead of time. You can ask questions during your build or share pictures on my debug forum at https://www.stevesclocks.com/forum. Videos: Overview: https://youtu.be/ha0zwMUMGpg Assembly: https://youtu.be/ZJJ9jcc7Va4 Friction clutch details: https://youtu.be/WyHAgiHWXsk   03-Dec-23 Update: Added a few optional parts by request. The file names should be self-explanitory.   frame_back_retainer.stl - Lower retainer to hold clock position steady when winding.  frame_dial_numbers.stl and frame_dial_numbers_split.stl - Simple numbered dial.  hands_spade_*.stl - Spade style hands.  gear8_54_11_days.stl and gear8_54_15_days.stl - Smaller diameter winding barrels for longer runtime.  swing_gauge.stl - Pendulum swing amplitude gauge.