So, I am looking to do another fretless conversion. What can I say, I just don't get on with frets. To start off with, I wanted to address/question some of the ethical implementations of this. Essentially I have two source of ivory I can use. Old Piano Keys, perfect veneers of ivory ready to use. Mammoth Ivory, needs a lot of work to get it down to a thin veneer So, the Piano Keys are sat in a box, the rest of the piano is long gone, obviously elephant ivory has a long past of animals being killed and poached. Sure using this ivory isn't going to result in any more elephants being killed, however it does feel a little like using it/owning it in some way condones the suffering. The Mammoth Ivory on the other hand is entirely ethical, it is sourced from the bottom of a glacier where parts of mammoths and tusks come out occasionally. Because Mammoths are extinct there is no dilemma to be had. However as you may realise this isn't an infinite supply, it has doubled in price in the past year. I have used it to make a few nuts from, its really nice to work with. You can see the mammoth ivory is pretty thin slices already. (Mammoth Ivory on the Left, Elephant Ivory from Piano on the right) Here is a nut made from the mammoth ivory.