Common mistakes when creating master axis 3D models include misaligning the master axis with the model’s functional center, inconsistent scaling between the master and child objects, and neglecting hierarchical dependencies.
Misalignment disrupts animation or assembly—like a car’s master axis not at its center making steering look off. Inconsistent scaling distorts child parts (e.g., a robot arm that’s too big if the master scale is wrong). Neglecting hierarchy means editing the master later breaks linked components (e.g., moving a character’s torso and having hands float).
To avoid these, align the master axis with the model’s main motion/assembly point (e.g., a chair’s seat) and test transformations on a small child object before finalizing.