Watch Winder Geared

thingiverse

This is a remix/completion of this watch winder: https://www.thingiverse.com/thing:2974687 . I really liked the design but unfortunately on the original thing there were a lot of parts missing, so I created the missing ones and changed some things about the existing ones. The electronics are based on this guide: https://www.instructables.com/3D-Printed-Watch-Winder-ATtiny85Stepper/ . However, I also added a lithium battery to and a switch to turn the winder on and off. You will need to change the orientation for minimum supports. Depending on the strength of your springs you should print the watchholder in 100% In addition to the 3D printed parts you will need the electronics from the guide as well as: - 1x 608 Bearing for the winder gear - 1x screw that fits the bearing incl matching washers and nut (M8) - 2x 4mm rods for the watch holder, (length depends on the length of your wrist band), you will need to cut threads into the ends of the rods (maybe threaded rod will work too, but the movement of the holder might suffer) - 2x nuts for the 4mm rods (I used cap nuts) - 2x springs with inner diameter of around 4 mm and length according to rods - 2x screw and nut to screw the board onto the base (M6 should be fine) - some glue - 4x 2mm rod to put watch holder on the upper gear each about 1cm If you want to add the battery, you will need in addition to the stuff in the guide: - 1x TP4056, to charge battery via mini usb - 1x Lithium Battery e.g. 18650 types - 1x rocker switch (those standard ones will fit in the slot) The cost without the filament shouldnt exceed 20€. The battery will be the most expensive part. Some hints for assembly: the tolerances might be a little off and depends of course on your printer as well. You might need to do some sanding and drilling to make it work. What I had to do was: - Drill the holes on the board: 8mm for the top one 5 mm for the bottom one - sand the hole of the big gear to fit the bearing -> press fit it, or if too lose put some glue on - glue the motor on the nubs (I added nubs to the board which will perfectly fit a 28byj-48 - drill 2mm holes for the small rods into the upper gear and glue them in (drill in about 5mm) - for the watchholder: drill holes in both parts (4mm), and also the 2mm holes for part one, glue in the rods in part one, when dry add the springs and part two (drill out those holes so they will run smoothly on the rod), hold everything together with the nuts - solder all the electronics together and glue them inside the base, there should be more than enough room, there is a slot for the switch and a hole in the back where the mini-usb should be placed Since I am not a pro when it comes to electronics please do everything on your own risk, especially when adding the battery since those are always a potential fire hazard. I hope my additional parts and infos will make this watch winder work for you, since I think the design is really neat. Feel free to ask if anything is unclear.