Hermione's Time Turner

thingiverse

http://youtu.be/yBBYdMvDBfY ABS plastic 243°C extruder 48°C bed 0.2 mm nozzle 0.2 mm layer height Cartesian printer friendly :D "some" assembly required, along with a paperclip and some superglue. no chain included :D Instructions the parts are printed with smaller than needed holes, this is so you can make it as tight or as loose as you want. the turning arm needs some sanding down. for the axles, not even a whole paperclip was needed so cutting it down to size might need some precision, depending on your skills.