Parts to buy:
1x dial clock module
1x AA battery
The thread of the dial clock module has 8 mm diameter
https://www.amazon.de/Mudder-Drehmoment-Mechanismus-Verschiedenen-Ersatzteile/dp/B086WDP5ZQ
Assembling:
No glue needed simply push the parts together
If it goes to tight look if you have removed all burrs
Other design options
I made some other designs for Clock_part2 if you want to change the look of the clock
Printing instructions:
Clock_part1: 0,2 mm layer height, no supports, infill 10%, rectangular infill, 2 perimeters
Clock_part2: 0,15 mm layer height, no supports, infill 15%, rectangular infill, 4 perimeters
All digits: 0,15 mm layer height, no supports, infill 10%, rectangular infill, 4 perimeters
The author marked this model as their own original creation.