There is so much copper in HDMI and basic electrical cable! I took apart several lengths while in the desert to start my triangular winnowing basket, and the results where far more beautiful than I ever imagined. There is a length of twisted copper in electrical cable, and a braided copper tube in HDMI. This basket will be made out of a braided copper warp and twisted weft. The vessel's structural support will come from the lengths of plastic insulation that I removed from the center of each copper braid in the HDMI. I am excited to continue working with the wire.