I am making an animation where the character is shimming across a ledge, and the ledge starts to crumble. I would have to delete faces of the ledge to make them crumble. How can I do that?


1 Answer 1


You could use a Mask modifier if you really want to delete certain faces on a certain frame, however I'm not sure this is really what you want to do.

Mask modifier:

If you really want to delete a specific face (or faces) on a certain frame, then you can use the Mask modifier.

  1. Select the faces you want to hide and assign them to a vertex group in Properties > Object data > Vertex groups

  2. Add a mask modifier and select your vertex group and enable Invert by clicking the button next to the vertex group selector:

    enter image description here

  3. Keyframe the visibility of the modifier by hovering over the eye icon and pressing I.

If you want more variation, try using a reversed Build modifier. This will delete all faces in the object over time, either randomly or in order.


If you are trying to make a more complex/realistic You might also want to try the Cell fracture addon (see this post):

Example gif

Or the explode modifier.

  • 3
    $\begingroup$ All faces touching a vertex assigned to the Vertex Group also disappear. To get just a single face to disappear, select that face in Edit Mode, then go to Mesh > Faces > Poke Faces, and only assign the new vertex at the center of the poked face to the Vertex Group. $\endgroup$
    – Garrett
    Apr 6, 2014 at 21:12

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.