manjaro
No-No Place-licky McNicky
in "the trial of superman" the cyborg tapped into the planet's crust and made a giant weapon out of it and was blasting the shit outta him so i think that counts as non metallic(though he still was in metallic form to dirstribute the energy) meh..who knows.
on another note though, seeing as how the source wall is the edge of space, and is an indescribably large object that have been imprisoning beings for eons who have tried to breach it. from all my readings featuring it , I never pegged it to be a machine, its more like giant rocks, giant beings, and primordial cosmic energy, so the fact that the cyborg can claim a moon sized piece of it for himself, i do beleive that is quite a powerful feat.
which leads me back to my original stance that he is not somebody to mess with. i have a feeling that he might pull it off and even if he cant its gonna be the Surfer's fight of his life. its not gonna be like when he had Morg at his knees and lecturing about mercy. the cyborg would pout him thru the wringer