How to model and animate a procedural,keyable coil spring / HD

Hi there,
this is a tutorial on how we can model and animate a “procedural” (non dynamic) yet keyable coil spring using a variety of modifiers.
We’re going to learn how to effectively use Screw,Cycles and Envelope modifiers for achieving an almost physically realistic and adjustable coil spring animation result.

Here is the link to this tutorial >
http://www.youtube.com/watch?v=E1jwdZMQZOQ&list=UUKDe8_5_-j7HvyS6p0QLlaA&index=1&feature=plcp

hope you’ll enjoy it!

Peter