In a message dated 10/2/98 8:53:19 PM Mountain Daylight Time, tesla-at-pupman-dot-com writes: > What I thought might work was to make another 18" toriod > and put it on top of the existing one. Will this work? has anyone used s.s.? > > > all comments very welcome > > bob golding Hi, I have seen a number of coils that utilize more than one toroid. You might want to consider using two of the ducts to make one large diameter toroid. Mike H.