I have not stabilized Sanbar Stag or Cocobolo, I fill any pithiness in stag with a mixture of epoxy and sanding dust from the antler. None of the knives that I've built using these materials has shown any signs of problems. I have also used exhibition grade Claro Walnut on occassion and believe the scales I bought for these projects were stabilized, probably helps with Claro Walnut's bigger pores.
