In this thrilling tutorial we look at creating a dynamic spring that actually shows in the render and works with the dynamics system. This came about after I was creating an exploded locking mechanising for an advert. Cinema has the spring connector which works wonderfully, however it doesnt show in the render. In order to get round this I created a helix spline with a sweep nurbs and then tied that to the position of the top part of the spring. Hey presto a working spring that shows in the render and is completely dynamic! Check out the example below for a real quick idea of what I mean.