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Posted

Who is game for this one.  I want to animate this robot arm and keep the green part "horizontal" as I move it here and there.  I believe I could do a hack job by having just 2 bones in the IK chain and hand animating the green hand to stay flat by that is slow.  I would prefer to to use this 3 bone setup.  Is it feasible?

 

 

robotarm.jpg

Posted

There's no reason to have the green part included in the IK handle at all, as 3 bones, especially if it is to remains horizonal. Just make it a two bone and add a controller to the bottom of the green handle/top of the arm.
Then you can add another IK handle to the green handle from the bottom to the tip of the green part. Lastly parent the second IK to the Control of the arm and it should stay horizontal. It should orient anyway you like while

simultaniously pulling the arm. You can use constraints also.

 

Hope that helps.

 

  • 2 weeks later...
Posted

Great! Glad it's working!

If you are planning to do more rigging, I have 2 best practice, downloadable DVDs available for $100. paypal: athreet@adelphia.net.  Much Success.

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