RE: McMaster-Carr 12" aluminum duct for toroid question

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

Original poster: "Stephen Mathieson" <sm-at-uwmail-dot-com> 

The 12" duct makes a nice toroid but it will dent with a lot less force than
you may think. Bert pool made a nice toroid out of the flexible drain which
was demonstrated at the 2004 TCBFW Teslathon. Bert's "Tar Baby" toroid
worked extremely well and is resilient to dents. The one problem was 20KW
arcs would burn holes in it.

Stephen A. Mathieson

-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Sunday, October 31, 2004 8:00 PM
To: tesla-at-pupman-dot-com
Subject: RE: McMaster-Carr 12" aluminum duct for toroid question

Original poster: "Rich" <rdjmgmt-at-socket-dot-net>

Well I worry about crushing it , not because of the cost but because I
am a klutz when making it and it looks so bad , I am going to try black
plastic drain now and hoping I can make it look better. 10' of the 4"
for my small coil was only about $3.
Rich

-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Sunday, October 31, 2004 6:19 PM
To: tesla-at-pupman-dot-com
Subject: Re: McMaster-Carr 12" aluminum duct for toroid question

Original poster: FIFTYGUY-at-aol-dot-com

In a message dated 10/31/04 2:52:18 PM Eastern Standard Time,
tesla-at-pupman-dot-com writes:

   >  Also, I'm not sure how the piece that's ex-
   >  pandable to 30 ft. can have the same compressed length of
   >  30" as the 15 ft. expandable stuff.  Maybe a typo on McM-
   >  Carr's part?

       I was wondering that myself.
       I just placed an order for 30' of the 8" size of your "#2" style.
I'll
let you know how it compares to the 4" and 6" stuff I've been getting
from my
local Home Depot (and whether it's really 2-1/2' long when compressed!).
       Why are people so worried about crushing their toroids? I might cry
if I
dropped and dented a nice expensive spun one, but it's easy to patch up
a very
cheap home duct-toroid.

-Phil LaBudde