I had been followed double bass course for a short time because of my bleeded finger tips and I very much loved Thomastic strings. I decided to learn the wire alloy and spent a night on scientific papers and patents. I learned they uses Cr18Ni8 alloy stainless steel wire which is cold drawn and known as traditional musical wire sold worldwide The quality is important , because of cold drawing , there happens a martensinite hard layer at surface of wire and this should be minimal, the wire is austenitic. Plan is to buy short reels of that wires and make my bass guitar strings without winding. What should be the thicknesses ? I have 1mm thick bronze wire for surbahar and no electric bass is equivalent.