I use the same type of soft potentiometer they use, and I find them kind of expensive. That constantan wire sounds somewhat promising but then all that custom w

I use the same type of soft potentiometer they use, and I find them kind of expensive. That constantan wire sounds somewhat promising but then all that custom work of winding onto a string and polishing sounds difficult or costly. I wonder if there is some sort of fishing line or something that would have useful electrical resistance.