Re: [ATM] Voice coil actuators was: DC Motor for grinding machine question

[Dale Eason <atmpob@yahoo.com>]

--- Mike Lockwood <melockwo@uiuc.edu> wrote:

...snip
> 
> Don believes these periodic vibrations might have an
> effect on the 
> surface roughness of the mirror.  Personally, I
> don't, but I've been 
> wrong before!
> 

Carl Zambuto mirrors have a well deserved reputation
of been extraordinarily smooth with no ripple.  They
are figured entirely on machines.  I believe they use
no special device to eliminate periodic error.  You
can see pictures of his shop and machines on his yahoo
group.


Dale Eason


 
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