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On 04/09/2015 07:38 AM, Timothy Gilmore wrote: > Thanks for sharing Doug. > > One question to the group...as I am building my new toroid, I was under the > impression that a smooth surface like I saw with Doug's machined toroid > would provide only 1-2 sparks but I saw many like I get on my aluminum > ducting toroid. Is this the case also with machined toroids? Smooth or not, too small of a toroid will tend to produce multiple sparks; this is what I observed with my current coil when I had the (smooth) toroid from my previous coil on it, even though I had a breakout point (more like breakout hump). When I built the larger topload, I was back to one single streamer. Some people prefer to have multiple streamers. As for myself, I prefer one. Jon _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla