I am want to apply a material just to the faces of an object that were edited by a boolean modifier set to subtract.

A/B Materials

A would be one material and B would be another. I am also doing this in a animation, so the subtraction object is changing on every frame.


1 Answer 1


This is how it works by default - materials transfer from one object to another with boolean operations. You just need to have material slots for all the materials used on both objects.

So if you just add a material slot and set it to the same material as the object that you use for boolean operation has it will transfer to that area. enter image description here

  • $\begingroup$ I wish this still worked this way. edit: Yes, still does - I missed the part where both objects need that material shared between them so that it can work. $\endgroup$ Commented Mar 18, 2020 at 18:56
  • $\begingroup$ I wish this was an option of the modifier. $\endgroup$ Commented Mar 16, 2021 at 19:52

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