When I watched this very cool video, I thought of all those hams who complain so bitterly about how difficult it is to wind a toriod on a T-50 core.
Thanks to Hack-A-Day for alerting us to this.
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Sometimes it is good to take a look at how other people home brew different kinds of things. Here is a fellow in Ukraine that really HOME brews.
I think this FB video is a good place to start:
Here is his YouTube channel:
https://www.youtube.com/channel/UC_nrEDtq-0OQEVupubH_QuQ/featured