[David G4EBT]

Wow - not just unwinding the coil, but presumably, at the same time, winding the wire onto a spool to reuse without kinking it, then rewinding the coil again? Quite a task, and in the true traditions of 'make do and mend' & 'waste not - want not'. I've only re-wound one field coil, and as with most things in life, the only time you think you might do it twice, is just before you've done it once! In my case, I simply used new wire and a homebrew motor -powered coil winder and that was challenging enough (2.3kms of wire).

I've hand-wound a 1,000 Ohm coil on a set of HR headphones by hand, and that was a doddle by comparison.