Customized version of http://www.thingiverse.com/thing:138222

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=138222

Using the following options:

stype = 1
pad = 4
w = 6.7
P = 45
T = 15
D = 51.7
tol = 0.15
st = 5
sd = 6
approximate_number_of_teeth_on_sun = 9
number_of_planets = 5
nTwist = 1
number_of_teeth_on_planets = 7