I have this shirt: before hitting play

which should just fall onto my character when I hit play. But instead it inflates like this: after hitting play

I have all collisions and self collisions set to the minimum but it doesnt seem to matter. I noticed the sim works properly when I massively scale everything up, but the character and the shirt should be big enough for the sim to work. I have another character with a shirt in this same scene that doesn't behave like this and I can't figure out why.

You can find the blend file here: https://drive.google.com/file/d/1I4rpa-lCSrVwc46zBq_EoLJU6_jiWjOA/view?usp=sharing

Any help would be greatly greatly appreciated!

  • $\begingroup$ Please next time share just a minimum of a scene needed to replicate an issue. So we can faster locate the issue and doesn't spend time by study your file. Thank you. $\endgroup$
    – vklidu
    Jan 9, 2023 at 9:38

1 Answer 1


Your body object (when Scaled back to 1 (=1.75 m)) has still set Collision > Outer Thickness 0.1 which means 10 cm ... when set 0.01 (1 cm) just for testing purpose, the t-shirt is not "inflated".

enter image description here

  • $\begingroup$ Thanks vklidu! That fixed it! $\endgroup$
    – Zack Alves
    Jan 9, 2023 at 22:08

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