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:

tip_height = 25
height = 5
cog_base_width = 10
cogs = 17
cog_length = 20
hole_diameter = 4
build_plate_manual_y = 100
build_plate_manual_x = 100
cog_tip_width = 5
no_angle = 10
cog_base_height = 30
build_plate_selector = 2
res = 50
internal_diameter = 10