Re: [ATM] Grinding questions

["John Stephen" <atmlist.net@johnstephen.org>]

What sort of things will places like this need to know, or more 
specifically, what do I need to ask for?  I feel a little intimidated about 
approaching a serious manufacturer like this (or any others suggested by the 
group) since I'm just a beginner ATMer.  I'm sure I'll have to know what 
type of glass, the diameter, and the thickness, but how do I ask for an 
initial curve?  ATMer's call it hogging out, but what do the professional 
optical shops call it?  Will they want to know the desired F ratio or SAG or 
what?  Also, are there any services I'd be wise to ask specifically for such 
as edging?

In case you can't tell, I'm a mild sociophobe which is why I'm going at this 
'alone' with only the web, books, and this group to guide me.  A couple of 
months ago I contacted RF Royce about simply making a finished mirror for me 
and he declined to make it.  I felt pretty awful about having someone judge 
me as unworthy of their services (or quality) and don't want a repeat of 
that.  Of course that was sort of a blessing since it put me on the path to 
making my own mirror which has been pretty cool so far :-)

Thanks,
- John
----- Original Message ----- 
From: "Nate Jones" <njones@newlintech.com>

> I have used (3) United Lens Co. Pyrex blanks and they turned out fabulous.
> I have also heard that Willman-bell kits are nice because they give you 2
> blanks (one as a tool) so you could make a plaster tool and then you could
> make 2 mirrors (binocular scope??) ;)


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