planetary gearbox

Number of teeth
　Sun gear 35
　Planetary gear 22
　Internal gear 80

I made a planetary gearbox for the purpose of using the 28BYJ-48, which is easy to obtain. If you apply grease to the gear part, it will move smoothly. For assembly, use 9 M3×30 pan head screws, 1 M3×40 pan head screw, 10 M3 nuts, and 12 M3 insert nuts. Embed the insert nuts in the holes with part names A00_01 to 04. As for the bearings I'm using, I'm using 2 each of the 6815zz and 16006 compatibles that I've published.It is good to use a metal gear shaft with a diameter of 4 to 4.2 mm and a length of 10 mm.

link
　6815
　　https://www.thingiverse.com/thing:6156497

　16006
　　https://www.thingiverse.com/thing:6156494