Many years ago, I remember finding out that Gibson used nylon for its top nuts and thinking, ‘Hang on, that’s not going to work.’ But, of course, so long as you use the right blend – not an easy material to work with compared with bone – it certainly does. I inherited a friend’s Ibanez semi that had a TonePros tune-o-matic with nylon saddles and, again, the guitar sounds really good and I have no plans to change it. But materials that have direct contact with the string, not least the bridge saddle, are central to the whole way a guitar works in its seemingly simple but actually rather complex manner – and that goes for whether they might be regular or more unusual materials.