From: George Anderson 
To: Russell Jocoy 
CC: ronaldn{at}ptd.net, atm{at}shore.net
Reply-To: George Anderson 


Hi Russ

The extrusion is 5 inches in diameter, I went with extrusion as opposed to
plate so that the grain orientation would be correct. I believe that I can
get the extrusions as wide as 8 inches in diameter, which is what we will
use if the whole thing works out. The idea is low cost mirrors for club
loaner scopes and public viewing. We don't mind if we have to polish and
figure once or twice a year.

George Anderson
Montreal Canada

Clear skies and good health

Russell Jocoy wrote:
> George,  The aluminum I worked with was only 3/16" thick. You say
you have a
> 1" thick piece.
> If this is the case the flex and thermal problems will be way less than what
> I had. What is the
> diameter of this extrusion?
>
> Russ Jocoy
> ("atm{at}shore.net")
>
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