The high-grade Georgetown works great with antler or copper either way. Of course, though, you don't want to give a perfectly good piece of rock copper poisoning.
![Grin ;D](http://www.primitivearcher.com/smf/Smileys/default/grin.gif)
You don't need the wood on it, the wood works better on the hard stuff like rhyolite and quartzite. The low-grade, grainy, concrete-y Georgetown works really good with wood, though.