Customized version of http://www.thingiverse.com/thing:570339

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=570339

Using the following options:

size = 40
thickness = 1.2
loop = 1
cuts = [[[0,0],[.124,0],[.075,.2],[.25,.35],[.225,.375],[.06,.235],[.03,.35],[.1,.4],[.075,.425],[.025,.39],[.02,.5],[0,.5],[0,.275],[.05,.125],[0,.05]],[[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14]]]