CHain necklace

Customized version of http://www.thingiverse.com/thing:28405

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing\_id=28405

Instructions

Using the following options:

links = 50
pitch = 12
type = circular
r0 = 20
t = 3.5
d = 15
l = 22