Cloth phasing through itself

[josemendez]

You have self collisions enabled on the cloth? Go to the solver and under Particle Collisions Constraint Parameters turn it up. You can play around with the values, but start at like 15. A poster wont bend to easily, so you will want to turn up the bending constraint iterations a little and under the bending contraints component you can adjust how much bend you would like.

Man niZmo, you're spot-on 100% of the time.

Nothing else to add to what you said. If we were hiring I'd hire you lol.