The block is almost ready. I bought the nylon cord, thick bolts and wingnuts yesterday; and they're all fitted. I've bevelled the hole and sanded the edges of the block.
I'm wondering how to hook the cords up. I do have a few basic "S" hooks, so I could experiment with attaching the hook to my original rope; then suspending the cord from the other end of the hook.
Any thoughts on that? The steel girder is too high up. I wouldn't dare attach the cord directly to it in case I slipped and fell on to the concrete floor!