How do I stop a rigged model's arm from attracting the torso when the arm moves?

PhoneyBaloneyPhoneyBaloney Posts: 0
edited December 1969 in Carrara Discussion

I am rigging a model of a human skeleton in Carrara 8. To avoid confusion in discussing this, I shall refer to the elements of the model as "model bones" and the Carrara structural bones as "Carrara bones." The model bones are not welded. I have created an entire Carrara skeleton for the model, but if I attach all the Carrara bones to their corresponding model bones, the model arms attract and distort other parts of the model when they move. This is the model skeleton with its Carrara skeleton showing:

Carrara_Skeleton_Rigging1.jpg
1344 x 840 - 184K

Comments

  • PhoneyBaloneyPhoneyBaloney Posts: 0
    edited December 1969

    Here is the arm rotating:

    Carrara_Skeleton_Rigging2.jpg
    1344 x 840 - 265K
  • PhoneyBaloneyPhoneyBaloney Posts: 0
    edited December 1969

    See how the arm attracts and deflects the scapula forward:

    Carrara_Skeleton_Rigging3.jpg
    1344 x 840 - 283K
  • PhoneyBaloneyPhoneyBaloney Posts: 0
    edited December 1969

    Deflection:

    Carrara_Skeleton_Rigging4.jpg
    1344 x 840 - 285K
  • PhoneyBaloneyPhoneyBaloney Posts: 0
    edited December 1969

    Deflection of the torso/rib cage:

    Carrara_Skeleton_Rigging6.jpg
    1344 x 840 - 306K
  • PhoneyBaloneyPhoneyBaloney Posts: 0
    edited July 2012

    Deflection of the torso/rib cage on the left side, when rotating the left arm:

    Carrara_Skeleton_Rigging7.jpg
    1344 x 840 - 208K
    Post edited by PhoneyBaloney on
  • AscaniaAscania Posts: 0
    edited December 1969

    Weight paint those vertices out of the arm bones.

  • evilproducerevilproducer Posts: 7,714
    edited December 1969

    Good thing you haven't moved the feet yet! ;-) actually, as Ascania mentions, you'll need to use the weight painting tools to adjust the influence. To make it a bit easier (at least for the arms), it helps if the model that's being rigged is in a T-pose, with the arms extended out.

  • PhoneyBaloneyPhoneyBaloney Posts: 0
    edited December 1969

    I'll try that. Or rather, I'll learn how to do that. Thanks.

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