Bone Tools

Bone Tools is a panel for generating new bone structures on your armature. These tools were previously buried in "Other Options" and now have their own home (they aren't cleanup/optimization, so they don't belong under Optimization).

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Create Digitigrade Legs

Converts a standard humanoid leg setup into a digitigrade (animal-style) configuration the reverse-jointed legs used on many furry/creature avatars.

• Restructures the leg bones
• Adds the proper bone configuration for digitigrade movement

Requirements: a properly rigged humanoid leg to start from, and an understanding of digitigrade anatomy.

The ? button opens a tutorial.

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Generate Twist Bones

Adds a twist-bone system for smoother arm/leg deformation. Twist bones sit between joints and distribute rotation, which reduces the "candy-wrapper" pinching you get on wrists and upper arms.

• Upper Body also generate twist bones for the upper arms/limbs.

Consider: twist bones increase the bone count and require correct weight painting to be useful.

The ? button opens a tutorial.

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When to use these

• You want higher-quality deformation and have bone budget to spare (twist bones).
• You're building an animal/creature avatar that needs reverse-jointed legs (digitigrade).

Run these after your rig is fixed and translated, and before final weight cleanup.

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Related Pages:

• Optimization - Mesh & bone cleanup lives here
• Mesh Tools - General mesh preparation
• Bone Parenting - Root bone management
• Troubleshooting - Common rigging issues

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Last Updated: July 28, 2026 | Plugin Version: 5.2.3.0 | Blender: 5.1 & 5.2 (5.2 LTS recommended)