Primary

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>" <Leik3-at-aol-dot-com>

Hi everyone!
I'm about to start on my primary and wanted to run some numbers past you all. 
First I have a 15/30 and I'm going to use 1/4 inch copper tubing (refrige) 
spaced at about quarter inch. Oh yeah, 2 1/2 inches between the secondary and 
first turn of primary. Does this sound reasonable?? Is the turn spacing too 
close? I read somewhere that You could use that perforated particle board, 
but it seems to me that it would arc along the board (it happened with 
regular wood). 
Any suggestions?
Thanks,
Dennis