With wrought iron, really not sure about the shape here…
https://www.knivesandstones.com.au/...市-blue-white-damascus-gyuto-240mm-k-s-profile
The description of the cladding makes it sound like he clad it with all the scrap he could find:
Clad: Over 4000 layers of damascus cladding, handforged by Hashimoto, comprised of:
Hitachi yellow paper 2, SK3 SK5, SKS3, SUP10, SNCM448, SNCM630, SCNM815, SNB16, SCN43, SC50C, SS400, various soft iron (information supplied by Hashimoto).