Thank you for your interest. I think that it is a good idea, but it might be that the piano wire is too hard for the teeth to grip. I am thinking of 3 rollers that deform the wire and clamp it with some kind of spring loaded outer sleeve that can be retracted to allow release. I have looked all over the net with no luck. I have seen string making machines that have this but hope to make my own. I already use a simple clamp but would like to find something better.