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Hi Angier......

Temperfoam is the best I've found in my search.  The info I read on
cushioning material was interesting..... the human back cannot tell the
difference in thicknesses when the temperfoam is at more than a  minumum
of 1/2 inch thick.  Sounds rather thin to me but that is what this
article said.  The bottom demands more thickness as you might expect.  I
sit on it in my office.  It is directly on a hard surface chair.  This
cushion is 1 inch thick and very comfortable.  The key to good comfort
with temperfoam or anything else is to spread the body weight over as
large an area as possible.  To me,  that means make the seats form
fitting so it contours the body and legs.  Where  the back meets the
bottom make it rounded to form fit the body.  Then form fit the back
with contours.

There are at least 3 different densities temperfoam comes in and many
thicknesses.  The people at Oshkosh, who make temperfoam available, say
to encase the temperfoam in fabric before they are upholstered.  The
fabric is similar to that found around pillows.  It's white cotton of
some sort and can be zipped on.

Jerry Grimmonpre'

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