Saturday, January 11, 2014

Slumping round disk with uneven surface

I am currently slumping a 6 inch round clear disk, with an uneven surface because I full fused s thick glass flower to one side and a thing glass flower to the other side,  made up of 2 2mm clear glass disks, into a relatively steep mold.  So small piece of glass into deepish mold.  After seeing video in Bullseye education, I learned that it should take more time to slump into a deep mold than to slump into a bigger mold that is relatively shallow.  So I used the following firing schedule:

200dph, I choose to ramp up slowly, because of the uneven surface, thinking to give the glass enough time to heat up evenly.  I will ramp up to 1210 degrees, here again the process temperature I read, is not so important but the hold time is.  I choose to hold for 45 minutes at process temperature.  Then from there all is the same.  It ramps down to 900 degrees as fast as possible.  Hold 1 hour.  Then 100 slowly dph until it goes to 700 degrees and then full power until room temperature.



             200dph.......................1210 degrees...........................hold 45 min
Full..............................900 degrees..............hold 1 hour
100 dph......................................700 degrees............hold 0
Full ...........................................70 degrees...................off

So, I will be looking to see whether or not the glass breaks and whether or not it slumps correctly.  It worked, here are the results.



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