fcleffer Posted December 23, 2011 Report Share Posted December 23, 2011 Brand new at ceramics, and having fun, I have a question. Is it possible to fire a small bisque object and its glaze at the same time? I wonder if applying the glaze to a very dry but not-yet-fired object less than the size of a tennis ball would work. If this question doesn't have some of you seasoned veterans rolling on the floor with laughter, I'd be interested in the technical reasons for or against. Thanks. Link to comment Share on other sites More sharing options...
Juli Long Posted December 23, 2011 Report Share Posted December 23, 2011 Im not a seasoned , just a newby, but I just did this with one of my test bowls for a glaze combo I was trying out. I stuck it in with the bisque firing. I bisqued to 03 so the piece went into the o3 for glaze. It was a 06 glaze to boot so It was a little hot, but it came out fine, and thankfully did not effect any of the bisque ware with glaze transfer. I don't usually do this, but I tried it ,because how else would I know if it would work, and it did. I was just careful when glazing the piece because it was leather hard, not even bone dry. I painted this glaze, did not dip. I won't do this every firing, but I tried it and it worked for me. My two cents worth. Juli Link to comment Share on other sites More sharing options...
Juli Long Posted December 23, 2011 Report Share Posted December 23, 2011 Sorry, just re-read the topic and you said cone 4 not o4, I guess my answer won't help. goofy me! juli Link to comment Share on other sites More sharing options...
Pres Posted December 23, 2011 Report Share Posted December 23, 2011 Brand new at ceramics, and having fun, I have a question. Is it possible to fire a small bisque object and its glaze at the same time? I wonder if applying the glaze to a very dry but not-yet-fired object less than the size of a tennis ball would work. If this question doesn't have some of you seasoned veterans rolling on the floor with laughter, I'd be interested in the technical reasons for or against. Thanks. One firing is not necessarily common, but there are many potters out there doing it. Steven Hill is one name that comes to mind. In most cases the glaze needs to be adjusted for the one fire process, and the firing adjusted to include a bisque and glaze firing in one firing. This is done by having a water smoke period, slow ramp up to 1100F. or so, and then accelerated firing to the desired cone. I have not done single firings myself, but with research I am sure you can find aid in the process. The biggest problem noted with one fire is that you have to be more aware/careful when handling your greenware with glazing. Otherwise there does not seem to be a downside and it does save on energy costs. Link to comment Share on other sites More sharing options...
trina Posted December 23, 2011 Report Share Posted December 23, 2011 Brand new at ceramics, and having fun, I have a question. Is it possible to fire a small bisque object and its glaze at the same time? I wonder if applying the glaze to a very dry but not-yet-fired object less than the size of a tennis ball would work. If this question doesn't have some of you seasoned veterans rolling on the floor with laughter, I'd be interested in the technical reasons for or against. Thanks. One firing is not necessarily common, but there are many potters out there doing it. Steven Hill is one name that comes to mind. In most cases the glaze needs to be adjusted for the one fire process, and the firing adjusted to include a bisque and glaze firing in one firing. This is done by having a water smoke period, slow ramp up to 1100F. or so, and then accelerated firing to the desired cone. I have not done single firings myself, but with research I am sure you can find aid in the process. The biggest problem noted with one fire is that you have to be more aware/careful when handling your greenware with glazing. Otherwise there does not seem to be a downside and it does save on energy costs. Hi, I single fire on and off. I normally do it with low fire pieces and I when glazing I never dip into buckets of glaze but use ducan transparent glazes that you can fire to about 1000C. They paint on rather thickly but smoothly in that way I have found that the greenware stays totally intact. I would say that it is really worth trying, I have had some great results. Trina Link to comment Share on other sites More sharing options...
SShirley Posted December 23, 2011 Report Share Posted December 23, 2011 I have single fired a few times in a pinch and it turned out OK. That said, if you are a true newbie and your pieces are very thick you might want to reconsider. You have to fire slowly, as if it were a bisque load, and then raise to glaze temp from here. If the pot is very thick it is probably more likely to explode. If it were me, I would wait till it was bisqued. Just my opinion. Sylvia Link to comment Share on other sites More sharing options...
fcleffer Posted December 24, 2011 Author Report Share Posted December 24, 2011 Thanks to all who responded. Based on your advice, I'll give it a try. And, BTW, regarding a mention by Juli, I meant to list topic as cone 04. Link to comment Share on other sites More sharing options...
Lucille Oka Posted December 25, 2011 Report Share Posted December 25, 2011 First just a few definitions- Bone dry unfired clay work is called greenware. Low fired clay work without glaze is called bisque ware. Bisque ware fired to maturity with glaze is called glaze fired ware. Did you mean- 'Is it possible to fire a small greenware object and its glaze at the same time?' The answer is yes. However, do not dip it into the glaze but brush it on. Be sure to leave the foot or bottom free of glaze. Be sure to have kiln wash on your kiln shelves. Do not let the 'vessel' come in contact with any other vessels, kiln walls, or posts or it will stick to them. Fire slowly as if you are firing greenware to bisque temperatures but you are going to continue firing to the maturing temperature of the glaze. Set your controller or the proper cone in the KilnSitter for the glaze temperature. Link to comment Share on other sites More sharing options...
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