Update 2023-Nov-20
- Modified gears to reduce drag resulting in a much smoother operation.
- Modified minute hand to fit drive shaft tighter, reducing backlash.
- Modified drive shaft to better fit the case.
- All modified files are marked V2.
For those just wanting to update a clock, print the following parts:
- Gear Train: upper and lower idler gears, upper and lower drive gear, drive shaft.
- Minute Hand
Original Post:
- This is a remix of the Robust Teaching Clock over on Thingiverse.
- Gears were updated with spur gears generated by Fusion 360.
- Face updated with two options: inlaid or raised markings.
- Drive gears update with “D” shaft to ensure proper assembly.
- Assembly alignment dots added to ensure proper gear placement.
- About 9 hours total print time.
Printing:
- Layer Height: 0.2mm
- Perimeters: 3
- Infill: 15% rectilinear
- Supports: no
- Rafts: No
- Elephant's Foot Compensation: Set to Zero for the inlaid minute marks.
Assembly:
- Screws required: 8 M3-10 socket head or M3-12 Flat Head.
- Refer to the assembly.pdf for additional details.
Post Processing:
- Inlaid pieces are glued in place with thin CA (super glue) applied with a 25 gauge blunt tip needle dispenser.
License:
Creative Commons — Attribution
Rod
