Hi Bryan,



I highly recommend a wire for the lower hinge.  You can see 
the

details of how to make one here:



http://lahr.org/john-jan/psn/gldn_psn.html



Cheers,

John



At 12:28 PM 6/12/2001 , you wrote:

I have read that a
ball bering was used in place of a knife edge in the construction of the
Lehman by some people. .....

or is this normal to see my construction go here
:http://www.1goss.com/seis.htm

 


John C. Lahr
1925 Foothills Road
Golden, CO 80402
Phone: (303) 215-9913  
john@........
http://lahr.org/john-jan/science.html