I have this modeled already but I have no idea how I can properly rig for animation.
I am specifically looking rig and animate the flat spring underneath. I would love to figure out how to simulate but maybe that is a longshot. Thanks!
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Did you model the spring already? I think concentric rings would be easier to rig...Oh! you can just rotate and shrink the spring while using proportional editing! – hatinacat2000 Aug 16 '19 at 13:29
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Check on this spool answer. Same concept applies here. – Leander Aug 16 '19 at 13:56
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Using bones and curve modifiers
The first bone has 100% influence on the spring.
The second one, its child and which is rotating, has a gradient influence on it.
To make this gradient, start with a simple plane and set the weight to 1 for a side (interior side), and to 0 for the second side (exterior side).
Once done, stretch it and loop cut it.
Now use a spiral curve (add curve extra object standard addon). And add a curve modifier on the spring.
You will need to weight paint a bit on the exterior part that may not move at all.
lemon
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1Brilliant. I'm still trying to get my head round the interaction of the Z rotation and the Curve modifier. – Robin Betts Aug 17 '19 at 08:58
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1The base bone (which does not rotate) as two influences: rotation and positions. That's what is giving the scale effect (at least I think : ). – lemon Aug 17 '19 at 09:11
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1seeing what you did, I appreciate the comment all the more. Thanks @Chris. – lemon Nov 06 '21 at 09:39
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