Here is a Cable Chain Width 20mm for  you can print and animate. You have a 3D printer, some building skills, This project is for you!! This is a hand built for a job (still picture commercial), it was supposed to be mobile but not animated and mostly be able to take human hand positions. Cables or fishing rods might be added in order to control it, but it was not the purpose of this work at first. I am now working on another model(for the fun), trying to animate it, I really would like to do it with computer control but I have never worked in that field. Never used servo's before, so any help is welcomed.