Filament Spool Hook for Deezmaker Bukobot

There are fancy, multi-piece roller assemblies for holding your filament spool, or there is this: a hook. One piece. It snaps onto the frame of your Bukobot, and you're in business. No magic printed bearings or axles. No screws or fasteners of any kind. Seriously. It grips in and around the slots on the frame rails and totally just hangs there.

"But wait, aren't smoothly gliding bearings important for printer performance?"

"Eh, maybe? I don't know... this works, though..."

Think o