I liked the idea of Coat to build a grid keeping the wires in the anycubic kossel basement without blocking the air flow for stepper or electronic cooling. I redesigned it to be a bit simpler and flatter.
Then I added an upper grid, based on the same idea, to prevent the electrical wires to touch the hot bed, a point which always bugged me... Now I feel safer ;-) and I even have ~1cm left between the grid and the bed to put some extra insulation to prevent the bed to heat the electronic !
Note : The maximum outer diameter is 220mm, including the fixations, so it'll push your printer near it's maximum printing size. For some (sw) reason, the original firmware doesn't allow such a print size. But marlin 1.1.9 allows 232mm and it prints fine with it
Lower grid needs support, upper grid doesn't. I printed them with PLA, it seems fine as it's not in direct contact with any hot surface.