Hi Beshires,

Both are cone shaped with rounded tips.

Supposedly Gray had rounded tips on both and that is what Bedini showed on his notes.

It will be a bit before I can run any tests to try what you mention to see what the effects are.

One thing I will definitely want to do is to blow torch melt some silver coating over both tips.

I would use a carbon resistor to see the difference of that as well but couldn't get any large enough diameter carbon rod to drill out and slip over the rod.