I have to rewind a transformer, for a vacuum tube oscilloscope. From 120V upto about 550Vrms. Whats some recommended tape or plastic/etc that will last and not melt in a big old hot transformer. They used paper or a cloth type thing, glued up. I can still remember the burnt smell taking it apart, yuk.
I'll have to get all the proper rated magnet wire too, another day tho.
Also for fun I want to try making some small HV SMPS trans/CI. Just power off 12Vdc 1A. How safe is standard PVC tape and ordinary office paper for little low energy flybacks like for a Jaccob's Ladder you see on ebay