Fresh thread over in the Buy/Sell section:
https://www.eevblog.com/forum/buysellwanted/vortex-coil-formers-for-sale/I'm sure there's some free-energy comedy potential with this seller, but it will take a little thought to get the best value.
If you're wondering what the advert is for, google vortex coils free energy.
Even on the first result page you'll find gems like:
"Vortex-Based Mathematics (VBM) is different because it is a dynamic math that ..."
"Making a coil that produces unlimited free energy. A number grid that shows ... The zero is always in the center in the form of the vortex hole. "
"The Unification Coil utilizes Vortex Based Mathematics, Sacred Geometry, and ...."
I don't suppose the mods would consider NOT locking that thread, while we have some Q & A 4chan-style fun with the seller? (Assuming he'll answer questions.)
Edit: Looking through that page of .... stuff, there's this:
1Stop Energies: Vortex Coil Lighting Inverter
What's shocking, is that this guy could be 'one of us'. He has a nice electronics workbench, with 8 multimeters stacked on the shelf above. (at 1:23)
Damn, a nice workbench AND a pretty girlfriend:
Hey, is that the same coil former? Related source?
Edit 2: Oops, sorry, make that wife not girlfriend, from reading the 'About' section on their site. Hmm, some more 'vortex based mathematics' references. Heh, and 'natural pathways' too! Not to mention a web page that prevents CTRL-C copy of its text content, always a great sign.
I figured they were in the USA, the moment she said 'sodder' for solder.