How to create rough edges for Foam material
I am trying to create a soft open cell charcoal foam that is pretty similar to the Eggcrate Acoustic Foam Panel in Substance Source. I am happy with the color and the look of it but I can't figure out how to create rough edges. It renders like a hard edge block.

Is there a filter or a technique I can use when creating my material in Adobe Substance 3D Sampler that will achive this? I tried messing with heigh and even the perforation filter but none did it for me.
Thanks
-david

