Solutions for Scaling Characters in CAT 3.0 Without Breaking Your Rig in 3ds Max

Published on January 08, 2026 | Translated from Spanish
Comparison between a character scaled correctly with XForm in CAT 3.0 and another with broken proportions due to manual scaling.

CAT 3.0 and the Art of Scaling Without Disasters 🐱⚖️

If you've made it this far, it's because CAT 3.0 has driven you crazy when trying to scale your character. Where before a dummy and a prayer to the 3D gods sufficed, now the system gets picky. But don't worry, there's a solution (and it doesn't involve reinstalling Max).

"CAT 3.0 is like a domesticated cat: it's still independent, but if you know where to scratch, it will obey you" — Rigger who survived 3 versions of CAT.

The Infallible Method: XForm to the Rescue

To scale without breaking the magic:

This method maintains the internal proportions and prevents the rig from turning into a three-dimensional pretzel. 🥨

Prevention for Wise Riggers

If you're starting the rig, adjust:

This way, you'll save yourself headaches when the client says "Can we make it 30% bigger?" in the middle of production.

What You Should Never Do

Under no circumstances:

CAT 3.0: Stricter but Safer

Although it now has more rules than a nuns' school, these protections prevent:

So the next time CAT seems complicated, remember: it's for your own good. As the veterans say, "I prefer a system that bitches at me when scaling over one that destroys my animation in the final render". 😅

P.S.: If you miss the freedom of CAT 2.5, you can always emulate it... with a hammer and your monitor. Not recommended.