Re: [ATM] Large Corning Disks

[<atm@hudler.org>]

	Were these blanks at Kirkland (I haven't read the thread)? I was out
there at DMRO in September and saw one crate. It was a 30 x 6 7740 Borosilicate
from Corning and had very bad stress fracture about midway through the disk
(radiating diagonally upward) and had a chipped edges. Looks like someone was
trying to make flats and got the tool suck and man handled it (e.g., Beat the
$$$$ out of it). 
	I thought to myself at the time that you might be able to saw about an
inch off it and get to the fracture line and make a thin mirror. However, this
was an escorted trip so I put the lid back on and walk on to what I was there
for.

Jack Hudler

-----Original Message-----
From: atm-bounces@atmlist.net [mailto:atm-bounces@atmlist.net] On Behalf Of Ed
Heiny
Sent: Friday, March 10, 2006 7:41 AM
To: atm@atmlist.net
Subject: Re: [ATM] Large Corning Disks


If anyone finds more out about the  blanks, I hope they post it to satisfy my
curiosity.  I posted it because, although I was interested, shipping was $500+
and the description  incomplete.  I was hoping an AMT'er near Albuquerque could
expore this opportunity better, but I guess I didn't post it soon enough!

That said, I think the glass was Pyrex or possibly even a better low expansion
glass.  Certainly not plate.   I said 24"+ conservatively based on the
dimensions listed which I assumed was for the crate.  However I think the blanks
were likely closer to 30" in size, particularly since the weight was listed at
250 pounds each crated.  When I talked to a shipper, they said weights listed on
the Government liquidation web site were usually accurate.  If so, either they
may have been very thick blanks or very large.  I did send an e-mail requesting
dimensions of the blanks, but it wasn't answered. 

Ed
 


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