Customized version of http://www.thingiverse.com/thing:1241118

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=1241118

Instructions

Using the following options:

height = 20

tooth_height = 6

extra_filler = 0.2

base = 20

tooth_thickness = 3.9

hole = 10

clearance = 0.1

animate = 0

twist = 90

slices = 20

res = 45