Re: ATM Big scopes

[goffaxe@azstarnet.com (Valerie & Bob Goff)]

>
>If you use unannealed glass, I wonder how much it increases the 
>chances of cracking the glass while you heat it?  Just a wild and crazy 
>thought.
>
>Bill
You betchum, big shot. Big cracks.
At Hextek, where they make full thickness lightweights, after the gas fusion
process ( which results in a right cylinder ), the glass is fully annealed
in order that it not crack ( we like to say it 'fracture') when it is
reheated to sag mold to your favorite radius of curvature.
Respectfully,
Bob

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Excuse me, I have to get back to that same ol' grind.