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From: marty@puppsr.Princeton.EDU (Marty Ryba)
Newsgroups: sci.space
Subject: Re: Kevlar (was:  Manoeuvring using rope and anchor)
Message-ID: <6117@idunno.Princeton.EDU>
Date: 9 Feb 91 15:26:12 GMT
References: <4728@mindlink.UUCP>
Sender: news@idunno.Princeton.EDU
Reply-To: marty@pulsar.princeton.edu
Organization: Dept. of Physics, Princeton U.
Lines: 25

In article <4728@mindlink.UUCP>, Bruce_Dunn@mindlink.UUCP (Bruce Dunn) writes:
|>   Kevlar is fascinating stuff.  I just acquired a spool of Kevlar fiber for
|> tinkering purposes.  It looks like pale yellow dental floss, or like polyester
|> sewing thread.  The spool that I have is loaded with a strand that has two
|> individual thread-like fiber bundles twisted around each other.  The thread is
Kevlar is fascinating stuff.  It doesn't have to be yellow; I've seen it white
too.
|>    The Kevlar I bought was obtained from the Canadian distributor for Edmond
|> Scientific.  In the Edmond catalog, the item is catalog number G34,883.
|> Price is $13.50 U.S. for a 600 yard spool.
Though the price doesn't sound too bad, for convenience and maybe a better
price, plus for stuff that is really optimized for tensile strength with
high flexibility and minimal abrasiveness (needed for making cables that
last), go to any good archery shop.  There are several brands of Kevlar
on the market; one was called "Super Flight" or something like that was
twice as strong per weight than standard Kevlar, and lasted longer since one
needed fewer strands per cable and it was less abrasive.  Remember, the lighter
the string, the faster the arrow will go.  Archery involves some high-tech
materials science and physics besides being plain fun.

-- 
Marty Ryba                      | slave physics grad student
Princeton University            | They don't care if I exist,
Pulsars   Unlimited             | let alone what my opinions are!
marty@pulsar.princeton.edu      | Asbestos gloves always on when reading mail