Re: HDPE vs Wood Primary Coil Supports

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

Original poster: "by way of Terry Fritz <teslalist-at-qwest-dot-net>" <Tesla729-at-cs-dot-com>

In a message dated 3/15/03 11:44:09 AM Pacific Standard Time, 
tesla-at-pupman-dot-com writes:
>Jeremy,
>
>A 7" secondary would imply a reasonable size power supply, like a couple of
>kva or more.  I would not lay or mount the primary directly on wood - even
>varnished, etc. wood.  How about designing it so that you can buy some pvc
>pipe that is the same inside diameter (or close) as the o.d. of your
>primary tubing.  Now cut short pieces like .50" to 1.0" long then cut them
>in half lengthwise.  Now insert these cut pieces into notches in the wood
>forms with the copper tubing laying in them?
>
>Have fun, Ed Sonderman


Jeremy, Ed,

I used wood supports for my primary coil but cut out strips of HDPE
cutting board and glued them on top of the wooden supports. The pri-
mary tubing is lying directly against the HDPE, NOT the wood. I think
I made the cutting board strips like 1/2" thick or so. This setup has
worked great for my pole pig powered coil with 5/8" copper tubing pri-
mary! I live in the humid south eastern US so direct HV contact with
wood is a definite no-no :-P

Sparkin' in Memphis,
David Rieben