Definitive Solution for Look At Constraint Issues in Biped

Published on January 08, 2026 | Translated from Spanish
Screenshot of 3ds Max showing correct Look At Constraint setup with Upnode in a Biped rig

When your Biped looks drunk: Solutions for Look At Constraint

Setting up a Look At Constraint in Biped can become as frustrating as trying to get a cat to obey commands: no matter how hard you try, sometimes it makes completely unexpected turns 🐈🌀. But don't worry, these professional tricks will help you tame those rebellious bones.

Foolproof Configuration

To prevent your character from looking possessed:

Professional Workflow

Follow these steps for a flawless setup:

  1. Create a Dummy as an intermediate target
  2. Set up the Upnode in neutral position
  3. Apply Reset Transform to all elements
  4. Test with different alignment axes

"A good Look At Constraint is like a good cameraman: it follows the movement without drawing attention. When it's noticeable, something went wrong in the setup." - Rigging Artist

Advanced Techniques for Difficult Cases

When the problem persists:

Verification Checklist

Before declaring victory:

Remember: if after all these adjustments your character still spins like a top at a children's party, you can always say it's a "new expressive animation technique"... although most likely with these methods you'll finally achieve that perfect and natural gaze tracking you're looking for. 👀✨