ATM Beginner's questions

[James Peercy <pjames1940@yahoo.com>]

Hello all,

I found this mail list while searching the web for
information about grinding a mirror. I bought a 6 in
mirror kit years ago from Edmund Scientific, but then
my teenage years happened and it was stored at my
grandmother's house for about 25 years. Well I have it
back now and I am going to grind this mirror. 

I've searched some ATM web pages, but I have a couple
of rookie questions I can't find answers to, so please
bear with me.

1) Are the grits and all still good after 25 years?
I'm guessing they are, but the pitch probably isn't.

2) Later in rough grinding, I understand that you use
a stroke that is like VV, in other words you make some
side to side movement too. What about at the beginning
of rough grinding? If I am understanding what I'm
reading, you offset the mirror by close to one half of
the diameter and go back and forth with the center of
the mirror close to the edge of the tool? Is there any
movement sideways or is it straight back and forth?

I'm sorry these are such "rookie" questions, but I'm
not quite sure how to start and I don't want to mess
it up.

James

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