Customized version of https://www.thingiverse.com/thing:151302

Created with Customizer! https://www.thingiverse.com/apps/customizer/run?thing_id=151302

Using the following options:

D = 48
T = 20
FD = 60
FT = 3
tol = 0.2
number_of_planets = 4
number_of_teeth_on_planets = 7
approximate_number_of_teeth_on_sun = 9
P = 50
nTwist = 1
w = 8