Summary

This is my small 3D printed gearbox 15:1 for this motor https://botland.com.pl/en/dc-motors-without-gears/4721-mini-dc-motor-mt86-3-6v.html ,but I am pretty sure this will also work with diffrent motors with 2mm shaft diameter. To build it you will need all the 3D printed parts, motor and:

Hot glue (to glue the motor and 12t gear)
2x 3mm screws and 2x 3mm screw nut
2mm and 3mm drill (to drill holes for screws and drill trought gears)
16mm x 2mm shaft
*25mm or longer x 2mm shaft

I will use this gearbox for roller brush to my autonomus vaccum cleaner robot project and I will also try to upload diffrent types of this gearbox with diffrent ratio

If you like this project you can support me so I can project more things