Guitar Geek Time! So i work for Rolls Royce in the UK who do a lot of testing on broken/fatigued parts of aircraft engines and stuff. (yes they dont just make cars ) To do this testing one of the things they use is this uber electron microscope called a "jetscan". Whilst walking past oneday I thought i'd make some personal use of it with my mates help/guidance (i just work in the IT sector of the company so dont do any weird testing and stuff myself). So I put a brand new d'addario Low B string into it, and here is what happend LOL! Surprisingly covered in shite for a new string haha.