Customized version of http://www.thingiverse.com/thing:54395

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=54395

Using the following options:

cog_base_width = 10
cog_tip_width = 5
build_plate_manual_y = 100
build_plate_manual_x = 100
height = 30
hole_diameter = 19
cog_length = 15
res = 30
cog_base_height = 30
internal_diameter = 45
tip_height = 20
no_angle = 10
cogs = 15
build_plate_selector = 2