Customized version of http://www.thingiverse.com/thing:53451

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=53451

Using the following options:

nTwist = 1
tol = 0.2
w = 5.5
P = 45
T = 15
D = 55
number_of_teeth_on_planets = 7
number_of_planets = 5
approximate_number_of_teeth_on_sun = 9