[Paddlewise] Vacuum flasks that ain't

From: John Kirk-Anderson <jka_at_netaccess.co.nz>
Date: Fri, 01 Jan 1904 00:19:56 +1300
Hi Folks,

This subject is probably best suited somewhere else, but there seem to be
plenty of scientific minds on Paddlewise, and as most of you appear to be
locked away in the cold and dark, it may be a challenge.

Santa Claus, AKA my wife, has given me a stainless-steel vacuum flask. It is
a replacement for the previous two, which failed to insulate the contents.
The first one, bought at REI, lasted a little over a month, while the second
lasted a week.

As they are a very simple construction, with only one external seam, I don't
understand how the vacuum could leak (is that what vacuum's do?) unseen.
This is the only way I can figure that they have failed.

Any suggestions?

Cheers

John Kirk-Anderson
Banks Peninsula
NEW ZEALAND

(where it has just got dark at 2130, after a beautiful day)

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Received on Wed Jan 01 2003 - 01:01:11 PST

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