Ironwood would make a great bridge, hard to work with but it's sure durable and ages well. We had an exotic wood seller in Edmond Oklahoma who would sell me scraps that I used to make pipes for a local head shop, I used antler too with leather wrapped brass stems. They were for tobacco use only though :wink: but the head shop closed and the other one close to me won't buy anything but glass so I'm now out of the business.