Jan Anton Gilles Posted August 9, 2012 Report Share Posted August 9, 2012 I wonder if it is possible to biscuit fire porcelain at a lower temperture than 1300 °C , maybe soms chemical product ????? Can anyone give me a clue You can mail me also Gillesabm@skynet.be Link to comment Share on other sites More sharing options...
neilestrick Posted August 9, 2012 Report Share Posted August 9, 2012 Not sure what you're looking for here. 1300C is about cone 10, which is normal for high fire porcelain glaze firing. You should bisque fire somewhere between cone 08-03 before applying the glaze. Link to comment Share on other sites More sharing options...
Chris Campbell Posted August 9, 2012 Report Share Posted August 9, 2012 Jan Could you be more specific in your question? There are many ways to fire porcelain so explain what you are trying to do. Link to comment Share on other sites More sharing options...
Marcia Selsor Posted August 12, 2012 Report Share Posted August 12, 2012 yes. I bisque porcelain to Cone 04 usually but when I was doing crystalline glazes and firing them on bricks cut to fit their bases in a catch basin, I bisqued at high fire temperatures to avoid shrinking in the final firing. This process was recommended by Herbert Sanders. This was necessary because the crystalline glazes are very caustic and one actually ate a hole in my kiln floor when it fell off the brick during the firing. crystalline glazes are required to be very fluid in order to grow the crystals. people have gotten very inventive in the recent decade in firing and using interesting forms and avoiding the high fire bisque. So unless you are doing some kind of process that requires no shrinkage in the high fire, I see no need to bisque at the high temperature. Marcia Link to comment Share on other sites More sharing options...
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