To: "Nils Olof Carlin" 
From: Scott Rychnovsky 
Cc: atm{at}shore.net
Reply-To: Scott Rychnovsky 


>Tom Krajci wrote:
>
>  > I've posted a discussion of the problem I am facing with main mirror
>cell
>  > design.  I need to eliminate 'slop'.  See:
>
>A possible simplified approach could be using ordinary hinges -
>standard components that effectively allow 1 degree of freedom. Two
>hinges at 90 deg allow 2 degrees. Disclaimer: I haven't tested this! A
>possible future project would be a 12 point cell with each 4-point
>section one crossbar with a crossbar on each end, in a wildly
>asymmetric but doable pattern (one inner circle of 3, one outer of 9).
>
>Nils Olof


Nils and Tom,

I made a mirror test stand using a Piano Hinge to get around some of the
same problems.  It tilts up and down on two contact points on the base and
left and right on the piano hinge.  There is very little slop in this
arrangement.  I have not tried to design a mirror cell, however.

http://tlepage.home.mindspring.com/test_stand.html

Scott

--
Scott Rychnovsky
srychnov{at}chem.ps.uci.edu

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