Here is a hands-on article which takes you step-by-step through the process of rewinding a burned-out power transformer. The example chosen was in an Eico ST–84 vacuum tube stereo preamp from 1962. Only simple tools and equipment were used, except for the electronic turns counter. (That could be improvised differently, though.)
The article is profusely illustrated with colorful photos and includes links to sources for materials. You can see it here (free!):
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