So I need to replace a missing palm key riser on this saxophone. I have seen and done many risers with epoxy putty. I have also seen ones made with cork layers and two part epoxy. Has anyone ever seen ones like these? It almost looks like balsa wood but they are as hard and smooth as glass and are absolutely gorgeous. I am curious to see if anyone knows how these were made or would be able to describe their construction. Thanks for any insight!