A metal shelf bracket vs. A short piece of 3/8" rebar. It's 44. 1/24 bit, recorded in studio with a tlm-103 mic straight into pro tools. Mostly clangs, and a few metal-on-metal scrapes.
Opening and closing an metal oven door a couple of times. Some wind audible in recording. This was an oven door in the ruins of the bakery in inneston ghost town, south australia.