One thing I neglected to mention is that I am using 14 Ga copper wire for mine.
After doing the changes I suggested in my earlier post. It works very well. One may have to adjust the chopper trimmer. The arc travels the full length of the wires.
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I got one going! Took a few slight alterations to the original circuit. I wanted to use an in the wall power supply. Got one from the place recommended in original article. It was capiable of one amp! Redrew the circuit to use two 555's since that was what was on hand. Started with very weak spark. ...