From:     Filipe Silva 
To:        
Reply-To: Filipe Silva 


Goran,

I did an annealing treatment on my 6" blank and in several others from
my ATM work group (8" too). Check previous threads on this issue
because the source was all in here. My problem was that we didn't have the
exact glass composition so I had to use safe values. Check my calculations
here:

http://pwp.netcabo.pt/lafey/Recozimento.pdf

The PDF is in Portuguese but understanding the tables and calculations is
pretty straightforward. Don't skip any steps and do not remove the blanks
while the oven isn't at room temperature. It is a good idea to use a oven
for ceramics - the heating resistances in these are spires that can spread
the heat better than their "metal aimed" counterparts.

Hope this helps.

Regards,
Filipe Silva
http://pwp.netcabo.pt/lafey/ATM.htm

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