RE: Toroid Material

• To: tesla-at-pupman-dot-com
• Subject: RE: Toroid Material
• From: Gary Lau 23-Apr-1999 0648 <lau-at-hdecad.ENET.dec-dot-com> (by way of Terry Fritz <twf-at-verinet-dot-com>)
• Date: Fri, 23 Apr 1999 14:41:09 -0600
• Approved: twf-at-verinet-dot-com

>Original Poster: "Andy Cleary" <gemware2-at-dreamscape-dot-com>
>
>        I was wondering if it is a good practice to use flexible aluminum
>duct plain as a torus without coating it with the shiny metal flue tape?
>I had never seen it encouraged, but I found the flue tape to be too
>expensive for my budget.  I have noticed that most often the torus should
>be smooth, and if that be the case then I'm sure the plain duct would be
>right out.  Thank you for any comments,
>
>-Andy

Expensive?  The stuff costs less than the aluminum duct itself, just a
couple of dollars per roll.  Unless you're talking about something
different, for high temperature chimney applications?  The stuff I use is
more for moderate temperature duct applications.

Gary Lau
Waltham, MA USA

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