Damascus steel technology using copper piano strings

The video uses both the San Mai blade structure and the Mokume Gane technique and Damascus steel technology, and I dont know what to correctly call this mixture of technologies. The porous copper in the photographs of the blade is powder steel impregnated with copper, the physics of the process is not completely clear to me, pure powder steel was poured into the container. The strings consist of a steel core wrapped with steel wire, on top of which copper wire is wound. Thank you all for your support in the comments. Today is the 739th day of the war. Tea: Sheng Puer Tea beard. Channel with fragments of teas: My other channel: On my patreon page, I began to explain the processes and secrets of my work. Topics already covered: 1. Why do I add pepper to container Damascus steel. 2. What do I sprinkle Flux and its composition. 3. How do I remove the cont