For the traditional 'stag' bridge I use antler mounted to the edge-grain of a split quarter-sawn Western Red-Cedar base. I use some stag but mostly prefer moose antler. I find moose is tighter and more resistant to wear. The pictures here are moose. I prefer western red cedar for the feet. I find when it is used as I do it, ie. on the edge-grain, it both transfers and "holds on" to the vibrations. My Tambura article talks about this a little.
For the all-wood bridge I make it from one piece of Lignum Vitae.
Lignum Vitae is the hardest, densest wood in the world with a specific gravity over 1.4. Black Ebony has a specific gravity from 1.0-1.3, both will sink in water. Ebony weighs about 70 pounds per cubic foot, and Lignum Vitae weighs over 85 pound per cubic foot.
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