fan cart washers

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From: Algis Sodonis (asodonis@urbanschool.org)
Date: Fri Sep 21 2001 - 15:14:23 PDT 

Message-id: <fc.000f7611001f1975000f7611001f1975.1f197f@urbanschool.org>
Date: Fri, 21 Sep 2001 15:14:23 -0700
Subject: fan cart washers
From: "Algis Sodonis" <asodonis@urbanschool.org>

At this summer's teacher institute many teachers built fan carts that use CD
roms as wheels and rubber faucet washers as a means of attaching the CD's to
wooden dowels (the axles.)

I am trying to do this in my physics classes with students and am finding it
hard to purchase affordable washers in quantity. At Home Depot, they only
had a small quantity. At my local hardware store, they had quite a few, but
they were 50c apiece. At $2 per car for just the washers, that seems too
expensive. I have contacted Pitsco, a science and technology catalog company
and they wanted $8 for a meager 20 washers. Outrageous!

Does anyone have any cheaper alternative ideas or easier and cheaper way of
getting those unique sizes in quantity?

Thanks

Algis Sodonis
Physics Teacher
the Urban School of San Francisco

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