Original poster: "Mccauley, Daniel H by way of Terry Fritz <twftesla-at-qwest-dot-net>" <daniel.h.mccauley-at-lmco-dot-com> > Why is the strike rail open-ended on a tesla coil??? Does it screw up the coupling of the primary/secondary if done this way? Also, how close to the primary should this thing be. Can it just be one or two inches above it? Thanks Dan