I designed and 3D printed the parts, then built this clock
   • Christiaan Huygens inspired 3D printe...  
Find the stl files at the following links below:
https://cults3d.com/en/3d-model/gadge...
https://www.myminifactory.com/object/...
Hardware list below
The original design is an invention by Christiaan Huygens, made in 1656
He is the first to use mathematical formulae to describe the laws of physics of the clock and its pendulum
Learn more about him on wikipedia
https://en.wikipedia.org/wiki/Christi...
The original design that can be found here:
https://babel.hathitrust.org/cgi/pt?i...

hardware list:

8 x M6 x 150 mm rods
12 x M6 acorn nuts
14 x m6 nuts
3 x M6 x 16 (back frame, pendulum string)
2 x M6 x 20 (face)
2 x M6 x 65 (rewind frame)
6 x M4 acorn nuts
18 x M4 nuts
10 x M4 x 20 screws (anchor pallets, main pulley, rewind pulley)
3 x M4 x 30 screws (escape wheel)
4 x m4 x 10 screws (second face)
4 x M4 x 12 screws (face)
2 x M4 x 8 screws (face)

Shafts: 3/16 or 5 mm rods
1 x 125 mm (main)
1 x110 mm (pendulum)
2 x 100 (second and middle)
1 x 90 mm (escape wheel)
1 x 60 mm (rewind pulley)
2 x 55 mm (rewind)
1 x 35 mm (hour gear)
4 x 22 mm (weight pulleys)
1x 20 mm (pendulum)

Plywood at back
2 pieces 1/4 or 6 mm x 300 mm x 220 mm

misc:
parachute cord
weights, main 3.5 kg, secondary : 850 g or more as needed
dry lube may help