In a message dated 12/12/2007, paleoartifact@......... writes:

I've tried both your ideas of copper sheet and pencil leads, in a  different 
(unintentional) diamagnetic 
levitation variation model and thus far the results have been noteably  quite 
useful. 



Hi Meredith,
 
    I have also used D shaped pencil leads. I stick  some say 32 thou sheet 
onto a flat backing plate with double sided tape, apply  the round lead to the 
L edge of the plate and then sand off the top with new  emery paper on a flat 
backing plate. You can 'roll' the lead carefully off  the sticky tape when you 
have finished sanding. If you have any problems, heat  from a hair drier can 
help a lot. 
 
    You would likely get quite strong damping if you  made the Cu end foils 
wider so that they overlapped the end magnet + 1/2 the  outside magnets?  The 
field gradients should be considerable  here?
 
    Have you suffered from freezing rain in Denver?  There have been some 
very catastrophic looking pictures on TV. The last  time we had this problem was 
back in the 1940s. 
 
    The two part acrylic glue is very good for  sticking carbon. Devweld 530 
should be available to you in twin tubes? I use  Holdtite 3295.
 
    Hope that you are all well!
 
    Regards,
 
    Chris
 



   






In a message dated 12/12/2007, paleoartifact@......... writes:
<=
FONT=20
  style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size=
=3D2>
  
I've tried both your ideas of copper sheet and pencil leads, in a=20
  different (unintentional) diamagnetic 
  
levitation variation model and thus far the results have been noteabl=
y=20
  quite useful. 

Hi Meredith,
 
    I have also used D shaped pencil leads. I stick=
=20
some say 32 thou sheet onto a flat backing plate with double sided tape, app=
ly=20
the round lead to the L edge of the plate and then sand off the top with new=
=20
emery paper on a flat backing plate. You can 'roll' the lead carefully=20=
off=20
the sticky tape when you have finished sanding. If you have any problems, he=
at=20
from a hair drier can help a lot. 
 
    You would likely get quite strong damping if yo=
u=20
made the Cu end foils wider so that they overlapped the end magnet + 1/2 the=
=20
outside magnets?  The field gradients should be considerable=20
here?
 
    Have you suffered from freezing rain in Denver?=
=20
There have been some very catastrophic looking pictures on TV. The last=
=20
time we had this problem was back in the 1940s. 
 
    The two part acrylic glue is very good for=
=20
sticking carbon. Devweld 530 should be available to you in twin tubes? I use=
=20
Holdtite 3295.
 
    Hope that you are all well!
 
    Regards,
 
    Chris