Just a future note, don't make it with the same name. even just put it as Quad Todd (no cut) or smth like that.
Otherwise It deletes the original.
Also this is still cuttable lol. Check wr.
Edit(s) : If you want to actually make it uncuttable, you could place the walls a block further out and put barriers every second block. constant signs or something bumpy would probably also work on the current walls