o-ringer (create your own o-rings)

Ever have trouble finding the o-ring you need for a project?

Well, with this script you can specify the size you need and either generate the o-ring itsself (for printing in flexible material) or you can generate a mold to make the o-ring out of silicone or whatever.

For more than you ever wanted to know about O-rings (including what the standard sizes are), check out:
http://www.allsealsinc.com/ParcoO-RingSizeChart.pdf

NOTE: The accuracy and printability of the results are untested!

UPDATE:
Added version 1.1 which:

• Makes molds that actually work with "minionizing"
• Removed mold flaw in outside surface of o-ring
• Customizer settings are better without so many sliders
• Added customizer setting for resolution
• Mold key is bigger
• Code is more modularized and readable for use in other projects

The "official" home of this project is:
https://theheadlesssourceman.wordpress.com/2014/01/13/o-ringer-create-your-own-o-rings/