Hi Mario,

That is a great point about the coil being open in Bedini systems. So, the one on the right with the straight rod core may even be better. Only testing will show.

Kenny, I have not tested any common core systems yet. Just been looking exactly at what Meyer was doing and this seems to be it based on his own words.

If I were to do the one on the right with the straight open ended core, I would probably start with bundled welding rod...should let go of magnetic field pretty quick. That is all I used in the Bedini coils.