HI Everyone
I don't normally post to this site because I am really new to
Tesla coiling,
but I want to through my two cents into this discussion. I use the flexible
ducting too. I try the wood center but for the time it takes to make it,
and
the tape you have to use, I look for a better way to do this and easier and
cheaper. I went to walmart and bought 9in and 12in solid metal pie pans
to make my centers with and at $3 a pie pan I think it cheap. Now this
is good for 4 to 8 in toroids up to 24in. I have put pictures on my Flickr
site to see what I am doing. I also see no difference on my coil we these
than the one's made with wood and Spackle. This is me just playing with
my tesla coils.