Make an extendable spring

Hi everyone,

I’m modelling a lightbulb filament (spring shaped) and I want to rig it to a bezier curve in such a way that when I extrude the curve the spring will automatically extend itself.

Very similar to this but with a spring instead of a chain. I’ve tried applying the steps in that tutorial but it doesn’t seem to work :frowning:

Any ideas?

Hi JamesNZ. Your question made me remember modeling techniques :slight_smile:
spring.blend (493 KB)
if you want to see how it was done, you’re welcomed to this site:
It’s a good opportunity to study russian :eyebrowlift: