Primary holder questions?

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Original poster: Vardan <vardan01@xxxxxxxxxxxxxxxxxxxxxxx>

Hi,

I am making a small 4 inch ID primary coil with 1/4 inch copper 
tubing stuffed into 1/4 inch thick Lexan with 1/4 inch holes and 3/8 
inch pitch.  The supports are little 1/4 inch thick Lexan chunks that 
look like this:

http://drsstc.com/~sisg/files/SISG-coil/PrimaryQ-01.gif

I figure I will just mill off the top to get that "snap in" thing 
;-))  So I was wondering how much to mill off?  At 1/8 inch above the 
center line I get, a "squeeze" of 0.2165 inch.  Easy to mill that as 
much as I want to like 0.001 inch.  Don't want to go "too" far ;-))

Any suggestions as to how far to mill the 1/4 inch holes for the 
"snap in" are welcome ???;-))


Since the 1/4 inch copper tube is running $1.60 per "foot" =:O  I was 
wondering about smearing, rubbing, and generally coating it with that 
electrical anti-oxidant grease used in big box connections these 
days.  Normally an aluminum wire thing, but I wonder if that grease, 
or some other, would help keep the copper all shinny over the years?


I also note the little coil's Rac resistance is about 150 ohms as 
actually measured in three ways now...  That is about 100 ohms less 
than all the "programs" predicted...  Prolly a post for a different 
subject line...  But all is "weird" in Rac land...


Cheers,

	Terry