Generator field coil repair

Well , over the weekend I decided to have a go at repairing the field coil to the Generator on my Le Baron. For a few years I had been trying to get a replacement to go with the new Armature that I have. So a trip down to an Auto electrical shop was in order. With taking the Imperial, I found that I would get a bit more response & sense from people in the trade. ( they do like to see cars like this ! ) After a good discussion with the guy whom rebuilds Alternators etc , he advised me what basic materials I needed to do the job myself. This was a roll of Egyptian cotton about 3/4 inch wide to re- wrap the wire . Then a tin of Knotting sealer , which is in effect Shellac ! Knotting sealer is the stuff used as a pre-paint treatment on Timber that is weeping sap. I must admit that my chin hit the floor when I found out that the repair would work out as cheap as it did, plus that regarding the Wood knot sealer. The roll of Cotton & the Shellac will re-do all the electrical motors in the car at a cost if I convert it to U.S dollars, 15 bucks ! plus my spare time which I don't count.