jmhannon@.................... wrote:
> I sure wish there were an easy way to make the spiral flexures used in
> geophones.

I don't know about the material, but there are free/cheap plans to build
a cutting CO2 laser available. I have a copy myself. I wanted to try
cutting materials (laser engraving) when I had the time and money. With
computer control it would be  easy to cut almost any shape in thin
materials.

ted@.......... wrote:
> floor of a closet.  This leads me to believe that PSN members should serve a
> consulting role, assessing the situation before inviting a teacher or school to
> commit time or funds.

If I only knew what I was doing myself. ;)  I was trying to talk the
local community college geology teacher into getting an instrument. She
said that money was the primary concern and making something was almost
out of the question. The Guralp PEPP instrument was the most attractive
to her. Hey, the biology students have microscopes, why not give the
geology students a seismometer? :)

,Greg

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