[ATM] RE: Glass Slumping

[mckernan at murdoch.edu.au (Ian McKernan)]

Hi all!  Found the web-site below that seems to have some useful stuff 
about glass slumping.

http://www.warmglass.com/Basic_Process.htm

Can anyone out there who has done this tell me what temp they used to slump 
plate glass (19mm) into a mould, and how long they soaked it at this temp??

 From the notes on this webpage it looks like what i need to do is:

704 C :         How long???

515 C :         1.5hrs  (annealing)

515 - 453 C:    over 3 hrs

453 - 385 C:    over 50 mins

385 - 25 C:     over 40 mins

Now the guy who uses the oven i have access to reckons that he would heat 
it up to the required temp and let it cool for the rest of the day and over 
night.  No Computer controls on this one.

I'm thinking that the way to go is heat it to the "slumping temp" of 704C 
and soak it till its well slumped, then open the door of the oven and cool 
it a couple of hundred degrees.

Then set the oven to 515C and let it soak at this for at least 1.5 hrs, and 
then turn it off and let it cool.  Should be at room temp be the next morning.

Any feedback would be appreciated.  Haven't read as far as moulds in the 
info i have yet. Am trying  to work out if the oven will do the job.

Seeyahs!

*********************************************************************
Ian McKernan
Plant Biology Technician

         c/o Murdoch University
         Division of Science and Engineering
         School of Biological Sciences and Biotechnology
         South St Murdoch  6150
         Western Australia
         tel: + 61-08-9360 2206
         fax: + 61-08-9360 6303

Don't let the Dogma Bite!!

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