The AM Forum

I came across this site. They sell a range of toroid power transformer kits in different sizes, with a primary already on it.
Just saying that the filament transformers are sometimes hard to get in the odd voltages and /or with the really high voltage insulation.
The kits come with instructions on everything you have to do.
http://www.toroid.com/standard_transformers/transformer_kits/transformer_kits.htm

Has anyone would a custom toroid power transformer?

I haven't started with one of their "kits"
But I have used their transformers for a number of low-voltage projects ( under 150v )

And adjusted the output V by removing turns until I had what I wanted.

One I did strip the secondary off completely and rewound with heavier gauge wire.

It isn't at all complicated, and a little trial and error ( after easy math to find ratio)
will get you the output V you want.

Pretty easy for low voltage because there are so few turns.
Would be a little more time consuming to wind for high voltage though  :-)

A guy on youtube made a toroid winder, for putting hundreds of turns on a large air core toroid, from the rim of a bicycle wheel. It's ingenious, but not as weird as what he is winding.

http://www.youtube.com/playlist?list=PLD1C3D4B4ED5B8769

He's winding a toroidal field around a set of copper pipes which is part of one of Stanley Meyers' inventions.
Nonetheless a smaller ring or wheel could be used for the larger ferrite toroids having hundreds of turns, and his i interesting because it shows how it works.

see the winder work.
http://www.youtube.com/playlist?list=PLD1C3D4B4ED5B8769

a smaller home made one:
http://www.youtube.com/watch?v=53VKxQSvJ7Q

and a kit of the smaller one for home use:
http://mac-s-power.com/Electronics-Custom-Tooling_c2.htm

here is a commercial winder.
http://www.youtube.com/watch?v=oBdJvT7tpSM

I would probably use the toroid.com transformer kit myself, since only one or two units would be needed, maybe not worth the trouble of building a winder unless more were wanted.

I wasn't paying close enough attention...

I have never purchased anything from that company, because they are SO expensive... really high.

Whe I was reading the post originally, I was thinking of http://www.antekinc.com/

Even whacko free energy nuts can have good mechanical methods....

"Electrical Particle Generator' my ass......Stan Meyers frauds.....

Those fringe projects always start out enthusiastically and everything is built with videos and the rest, then 'silence' from the experimenter, usually because it didn't work. They seldom come back and say "well, we built this according to all those plans and couldn't make it work".

If the experimenter had understood what the real problems with the invention were, he would not have built the copy of the invention and the cool byproduct of the 'large home made toroid winder' would have never been engineered. At least he did a good job duplicating one of the 'generators'.

A few years ago a gentleman approached me wanting a broadband RF power amp to power something called a "Rife Tube". This supposedly killed germs when operated at precise RF frequencies with certain harmonics, etc.  He required an RF source of a few hundred watts, be made using vacuum tubes, and have just one control to sweep the frequency over a decade or so. He said solid state would not work and the best explanation for why sounded like conspiracy-suppressed witch doctor voodoo to me. But what do I know.. It wasn't going to work for cheap that's certain, and there was no $ for the job, and when referred to the "certainly much cheaper than me building it" solution of using a VFO and some of the older tube products from companies who specialize  broadband RF amps, there was another litany of reasons (beliefs, superstitions) why those wouldn't work. Oh well some people are so much smarter than I am.

No matter, the winder hints are what's important.  :)