Xfmr and Choke Rewinding

[EWoodman]

I've had an old aircraft battery charger kicking around for a few years. I
finally
decided to tear into it and see if I could salvage any goodies. What I've got
is a 56V CT 40 Amp (that's right 40 amps!) power transformer and a BIG filter
choke. Now seeing as both of these are open frame construction, it seems to me
that I should be able to do some rewinding.  I'd like to rewind the secondary
on the power transformer into a hefty center tapped filament transformer and
strip the core and rewind the choke to use as modulation reactor (large value
choke) for Heising modulation.  I've never done this before but have read in
several old books that it isn't that difficult (or so they say!).  Anyone have
any pointers before I dig in and screw something up?
(Such as type of wire, material to use between winding layers, etc.) Or should
I just give up and find someone who can use them as is for some project before
I ruin them?

Tnx and 73   Eric  KA1YRV

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