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Re: [TCML] Stand offs

I became frustrated at the unavailability of insulators for the top of my Tesla coils. I didn't want to give them away with a complete coil when I occasionally sell them on Ebay, so I made a silicone rubber mold of one of my ceramic insulators, and made exact copies in castable plastic. I do not assume that they will insulate high voltage as the ceramic ones will, but they do make a handsome standoff for a Tesla coil with a toroid on top. They can be seen here: 

http://s205.photobucket.com/albums/bb11/dgoodfellow/?action=view&current=100_0465.jpg

http://s205.photobucket.com/albums/bb11/dgoodfellow/?action=view&current=100_0466.jpg

http://s205.photobucket.com/albums/bb11/dgoodfellow/?action=view&current=100_0472.jpg
I used to list them on ebay for $8.00 each plus shipping, but stopped listing them as work got really busy and interest seemed to diminish. If anyone is interested in having one, contact me privately, and I will see if my mold is still in condition to cast a few more. 

Best regards, Dave Goodfellow
----- Original Message ----- From: <davep@xxxxxxxx> 
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Sent: Tuesday, April 01, 2008 10:29 AM
Subject: RE: [TCML] Stand offs



>

This topic has begun to intrigue me.
Is there something EXTRA special
about the ceramic material in these
bushings?  If not, It occurred to me
that we could easily make our own
with a little clay, and a kiln.

  Could be done, i guess.
  However.
  I've done some casual reading on the development
  hours/years/dollars that went into those simple
  seeming insulators.  I'd buy 'em:  Home brew
  gets into a LOT of unknowns of
  material/purity/lifeunderstress...

  One might by analogy ponder the recent discussion
  about the conductivity of the lettering on the
  PVC pipe (If I'm recalling accurately???) as
  illustrating the pitfall possibilities.

  best
   dwp

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