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Subject:Duct tape (was: Front blower fix: Free and permanent)
From:DaveC
Date:Thu, 18 Apr 2002 08:02:18 -0700

>I carefully positioned the end of the tube right where I wanted the
>juice to flow then taped it to the motor. (God bless duct tape.)

Duct tape is crap.

Here's an article I saved about the "quality" of duct tape:

-----

POPULAR SCIENCE (December 1998)

Tape That Doesn't Live Up to its Name

DUCT TAPE is one of the most versatile materials ever
invented.  You can patch a tent, seal up a box, or even
repair a leaky garden house with it.  But according to the
Department of Energy's Lawrence Berkeley National
Laboratory, there's one thing duct tape doesn't do well:
seal a duct.

In leak tests at the lab, researchers Max Sherman and Iain
Walker forced alternating hot and cold air flows through
finger-jointed metal ducts sealed with a variety of products
--including duct tape, clear plastic tape, foil-backed tape,
mastic, and injected aerosols.  The reasearchers also baked
the sample ducts at temperatures of 140 to 187 degrees F,
simulating the conditions in many attics.

"Of all the things we tested," says Sherman, "only duct
tape failed.  It failed reliably and quite often catastrophically."

Duct tape consists of a cloth backing and a rubber
adhesive.  "We think that heat degrades the glue, and that's
what's killing the duct tape," Walker says.

The researchers are recommending that duct tape
manufacturers reformulate the glue to work better at higher
temperatures, and that longevity standards be developed for
all duct sealants.  Whether that will happen remains to be
seen; as of press time, manufacturers were studying the test
results.

In the average house, 20 to 30 per cent of the energy used
for heating and cooling is lost through ducts.

                                        ...Dawn Stover
--
Dave Carpenter

Whatever you wish for me,
May you have twice as much.

"Sometimes I think we're alone in the universe, and sometimes I think
we're not. In either case the idea is quite staggering." -- Arthur C.
Clarke