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I was preparing to rig a dress to a character model, but when I added a cloth modifier, something strange happened: The cloth mesh would receive a collision impulse when touching a collider object, but no actual cloth simulation would occur. This results in parts of the mesh moving in the direction of the collision, but without any cloth physics. I should also note that this only happens to the dress object (or any duplicates). all other objects behave as expected when given a cloth modifier.

Some things I have tried (which didn't fix the problem):

  • Removing duplicate vertices (there were none)
  • Removing all other modifiers
  • Removing all vertex groups
  • Clearing all unused data blocks
  • Unparenting the object from the armature
  • Making a copy of the object
  • Manually sifting through the object/mesh data for any anomalies (I could have missed some though)
  • Restarting Blender
  • Restarting my computer
  • Using a newer Blender version

Here's the .blend file:

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1 Answer 1

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I have found a solution:

In edit mode, select "Mesh > Clean Up > Degenerate Dissolve" This removes any edges with length 0, which I had one of in my model. Why this single edge had such a strange effect on the cloth sim is still unknown.

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