If you do have money to spare, the most incredible operating chair is
the Herman MIller Aeron. It's also dispalted as artwork in the MOMA.
They are frequently available used on Ebay, as a lot of liquidated
dotcom companies bought them for their employees.
I've never had a sore butt or numb leg after a weekend of contesting
using an Aeron. In the past, I've switched back and forth between 3 or 4
charis thourghout the weekend, and even stood for a while.
On 1 Oct 2002 Tim Makins, EI8IC wrote:
> I needed a different operating chair - the old typist's chair I used wasn't
> really comfortable for long periods. No spare money to buy a new one... Then
> an idea occurred - car seats can be very comfortable, and I had a few spare
> in a couple of old cars on the property. So I removed one of the seats,
> found its centre of gravity by balancing the seat over a thin piece of 2"x1"
> wood strip whilst sitting on it, then welded a couple of 9"x2"x1/4" strips
> to the base. These were bolted to the old typist chair's swivel base, and
> hey presto, a brand new operating chair, very comfortable, and still with
> it's reclining back and headrest.
> If you are going to try this, there's one area that can be critical - the
> angle of the seat to the ground. If you look at the base of the seat on most
> chairs, i.e. the actual surface you sit on, it is generally parallel to the
> floor. However some car seats are not parallel, but tilt up at the front.
> You will need to correct this otherwise the front of the base will push up
> on the back of your thighs, which isn't comfortable over long periods.
> Typist's chair bases are very handy, for their wheels and swivel facilities,
> but if you don't mind a fixed chair, then a simple set of legs for your old
> car seat could be made out of a variety of materials, such as wood, rebar,
> tube, or box-section. If you've got a tidier yard than mine, and don't have
> old cars gently rusting back to nature, your local car-dismantler will
> probably be able to provide a variety of seats for small amounts of money.
> 73s Tim EI8IC
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Barry Kutner, W2UP Internet: email@example.com
Newtown, PA Frankford Radio Club