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Re: [Amps] fiberglas tape

To: <>, "'amps'" <>
Subject: Re: [Amps] fiberglas tape
From: "Mike McCarthy, W1NR" <>
Date: Tue, 13 Jun 2006 05:28:18 -0400
List-post: <>
Scotch # 27 Fiberglass electrical tape.  It is a special high temp high
dielectric strength tape.  After wrapping a toroid core with it I also give
it a couple of coats of GC Electronics Polystyrene "Q-Dope" (polystyrene
synthetic resin).  Both are available from  Mouser only
lists the 1/2" tape.  I prefer the 3/4" wide for those really BIG toroids.

Mike, W1NR

-----Original Message-----
From: [] On
Behalf Of
Sent: Monday, June 12, 2006 11:21 PM
To: amps
Subject: [Amps] fiberglas tape


I've often read "wind the toroid core with fiberglas tape..."  What the heck
is fiberglas tape?  

There is fiberglass tape for patching drywall, and for covering seams when
building a boat, and other stuff that I can find at my local hardware
places.  But none of this tape seems appropriate for winding around a toroid
before the turns of copper go on.

What is the right stuff, and where does one get it?


George T. Daughters, K6GT

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