PRR:
"Early magnet wire was wrapped with thread, once or twice, cotton or silk. SCC, DSC, etc. This actually works OK, if you are very careful. And keep it dry dry dry.
Improved "varnish" can be thinner and less damp-prone. You don't find much thread-wrap after the 1930s. I remember the older varnish breaking down under modest voltage, or maybe only where the varnish went on thin. Modern fancy-chemical "varnishes" seem to be far tougher. "
__________
You probably right CJ it's some silk vintage wire
"Early magnet wire was wrapped with thread, once or twice, cotton or silk. SCC, DSC, etc. This actually works OK, if you are very careful. And keep it dry dry dry.
Improved "varnish" can be thinner and less damp-prone. You don't find much thread-wrap after the 1930s. I remember the older varnish breaking down under modest voltage, or maybe only where the varnish went on thin. Modern fancy-chemical "varnishes" seem to be far tougher. "
__________
You probably right CJ it's some silk vintage wire
