Extension lift mechanics

[Steve Compton]

As realtives newcomers to the world of robot building, we need some advice about extnesion lift cabling. We are interested in a continuous-cabling extension lift, but are having difficulty getting our heads around the details of the cabling - attachment points and all that. WE have a Power point from JVN that helps, but nothing that gives us the ability to sort it out in hardware and strict mechanical terms. Any help out there with pictures or documents that are explicit?

Thanks!