madi beattie Posted April 25, 2012 Report Share Posted April 25, 2012 How much would a 10kilo bag of porcelain weigh after it has been fired, would the fired weight be more or less than the wet clay?? Thanks Link to comment Share on other sites More sharing options...
OffCenter Posted April 25, 2012 Report Share Posted April 25, 2012 How much would a 10kilo bag of porcelain weigh after it has been fired, would the fired weight be more or less than the wet clay?? Thanks Less. Link to comment Share on other sites More sharing options...
Pres Posted April 25, 2012 Report Share Posted April 25, 2012 How much would a 10kilo bag of porcelain weigh after it has been fired, would the fired weight be more or less than the wet clay?? Thanks When asking that question, consider the weight of water, and the existence of mechanical water and chemical water in the clay. After firing none of these waters are present. Link to comment Share on other sites More sharing options...
Riorose Posted April 25, 2012 Report Share Posted April 25, 2012 If the manufacturer cannot tell you then test. cut off 100 grams. wait til bone dry and calculate physical water loss FYI. then high fire the piece, weigh on a gram scale. then use your pre algebra skills to exyrapolate to the full 10 kilos. while you are at it form the 100 grams into a tile and carefully mark off 10centimeters. the shrinkage % CAN THEN BE ESTIMATED AS WELL. Link to comment Share on other sites More sharing options...
neilestrick Posted April 25, 2012 Report Share Posted April 25, 2012 You'll also burn out any carbon-based materials present in the clay. Don't forget this stuff all comes out of the ground, so there's millions of years of decomposed plants and lizards in there, too.... Link to comment Share on other sites More sharing options...
Diana Ferreira Posted April 25, 2012 Report Share Posted April 25, 2012 You'll also burn out any carbon-based materials present in the clay. Don't forget this stuff all comes out of the ground, so there's millions of years of decomposed plants and lizards in there, too.... Ewww, wanna gross us out? lol. One forgets where our raw materials come from :-) Link to comment Share on other sites More sharing options...
bciskepottery Posted April 26, 2012 Report Share Posted April 26, 2012 I recall someone telling me that some of the ancient Chinese potters, when preparing porcelain for the next generation, would urinate on the clay to improve plasticity before covering the pit. Link to comment Share on other sites More sharing options...
Pres Posted April 26, 2012 Report Share Posted April 26, 2012 I recall someone telling me that some of the ancient Chinese potters, when preparing porcelain for the next generation, would urinate on the clay to improve plasticity before covering the pit. This technique was not only used in Asia, throughout Africa, and other countries. Link to comment Share on other sites More sharing options...
Matt Oz Posted April 26, 2012 Report Share Posted April 26, 2012 You'll also burn out any carbon-based materials present in the clay. Don't forget this stuff all comes out of the ground, so there's millions of years of decomposed plants and lizards in there, too.... I know for a fact, that there is some T. rex in my clay. Link to comment Share on other sites More sharing options...
timbo_heff Posted April 26, 2012 Report Share Posted April 26, 2012 It's about 30 % lighter fired v. moist pugged Link to comment Share on other sites More sharing options...
neilestrick Posted April 26, 2012 Report Share Posted April 26, 2012 You'll also burn out any carbon-based materials present in the clay. Don't forget this stuff all comes out of the ground, so there's millions of years of decomposed plants and lizards in there, too.... I know for a fact, that there is some T. rex in my clay. T. Rex were not good throwers because of their tiny arms... Link to comment Share on other sites More sharing options...
bciskepottery Posted April 26, 2012 Report Share Posted April 26, 2012 T. Rex were probably hand-builders . . . mostly earthenware, which led to their extinction. : ) Link to comment Share on other sites More sharing options...
neilestrick Posted April 26, 2012 Report Share Posted April 26, 2012 T. Rex were probably hand-builders . . . mostly earthenware, which led to their extinction. : ) You are gonna catch so much crap for that..... Link to comment Share on other sites More sharing options...
Matt Oz Posted April 26, 2012 Report Share Posted April 26, 2012 The ceramic arts are indeed ancient Link to comment Share on other sites More sharing options...
macdoodle Posted April 27, 2012 Report Share Posted April 27, 2012 T. Rex were probably hand-builders . . . mostly earthenware, which led to their extinction. : ) You are gonna catch so much crap for that..... Yes, us old dinosaurs are watching... Link to comment Share on other sites More sharing options...
bciskepottery Posted April 27, 2012 Report Share Posted April 27, 2012 T. Rex were probably hand-builders . . . mostly earthenware, which led to their extinction. : ) You are gonna catch so much crap for that..... Yes, us old dinosaurs are watching... Most days I feel as if I am one with T.Rex . . . not only is he/she in my clay, but I primarily hand-build. Link to comment Share on other sites More sharing options...
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