I wanted to print one of these but all others i could find just didnt work. So i made my own. 2 versions you can print. one is fully 3d printed and one has a 3/4 bearing i got off amazon.

Takes about 40 mins on my printer and a little bit of force to get everything to fit together but after its smooth and works great.

Length- 2.25" Width- 1.25" Hight- .75"

STEPS: 1- print 2- compress the spring so its springy (depending on your printer it might be a little harder to break free) 3- put gear on body 4- put cap on (don't put it on diagonally i made it to have a tight fit and if put on diagonally it'll not be as tight) (also cap is a little hard to get on)

SETTINGS: Nozzle- .4mm Infill- 15% Infill pattern- grid Support- none Build plate adhesion- none Filament- any Size- 100%

Please give me suggestions on how to improve