Pics might take time, but tried cable welded on the ends, and yes it did frey under heavy load. Thing I didn't notice till today is before they did I not only trimmed along the shed, but also through it in a few places. Now it's an inch lower. Chain..possible but wouldn't it wind around the spindle when it starts? Square shaft might be to harsh if it hits something solid, plastic breaks too easy if in hard weeds, so I'm back to trying a plastic surrounded cable for rigitivity when starting and a welded end to prevent freying. Still have other problems with the Eater, (as I call it), like harsh recoil of the arm when deflecting off t-post, and the loss of hyd. to the motor when pulling or pushing the arm around bushes or small trees(also extendable). Think this can be overcome in time with everyones knowledge. Appreciate the support.