Customized version of http://www.thingiverse.com/thing:44815

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing\_id=44815

Instructions

Using the following options:

type = 1
groove = 2
margin = 0.1
weight = 11
diameter = 11
edges = 1
cursor = 100
$fn = 50