Winding Varnish ???

Other than it should be traditional resinous copal varnish, not polyurathane, as far as i know.

-- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on

electrical

Rick

Rick,

I usually use GC Electronics Red Insulating Varnish (p/n 10-9002).

I'm sure I've heard of Shellac being used for this purpose.

If you're supposed to use enameled wire (wire with an enamel coating for insulation), use wire that comes that way from the factory ("magnet wire"). If you want to put a heavy plastic coating over a finished coil, I've had good luck with (don't laugh) PVC pipe cement, which is a thin clear plastic glue.

jijo--

A-C Motor Repair and Rewinding published in 1941 says this--"...dip the coil in a good black baking varnish and bake it dry...The varnish should be kept at a specific gravity of about .84; the coils are dipped cold and allowed to soak about 15 to 20 minutes until the air bubbles stop rising to the surface of the varnish. Then the coils are drained and baked from 6 to 10 hours in an oven with forced ventilation, at from 115-120 C or about 240 to 250 F. For normal operating conditions two dips and baking are preferable...four or five dips and bakes are advisable for bad operating conditions....."

I have never insulated my own wire but it can be done--enamel wire just sounds simpler.

Good luck,

Tut

Thanks to everyone who participated answering my question . Thanks again , Rick