Character FX & Animation
Biped Character Rig Part 23 - Rigging a Biped Character's IK Spine
The creator describes rigging an IK spline for the biped character. The original title identifies the subject as the IK spine.
Video-only learning resource

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Video-only lesson. Detailed written instructions and validated captions are unavailable. This overview uses the original creator description; the historical technical workflow has not been independently verified. Software interfaces and techniques may have changed.