druttaro Posted February 5, 2013 Report Share Posted February 5, 2013 I am making a bowl and want to apply glaze at cone 10 only on the inner surface, then refire it at cone 5 with underglaze for vibrant colors. Is this even possible? Will the inner glaze be damaged? Any help is welcomed! Link to comment Share on other sites More sharing options...
Marcia Selsor Posted February 5, 2013 Report Share Posted February 5, 2013 Yes it is possible but be careful that you don't shock the matured/vitrified clay on the second glaze firing. you may have a tricky time getting the ^5 glaze to stick after the ^10 firing but it is possible. You can get brighter colors at ^10 if you use encapsulated stains. That could save you the hassle of 2 glaze firings and struggling with glaze application on a vitrified body. Marcia Link to comment Share on other sites More sharing options...
neilestrick Posted February 5, 2013 Report Share Posted February 5, 2013 There's also a decent chance that the cone 10 glaze will change in the cone 5 firing- color shift, glossiness change, etc. Test it first. Link to comment Share on other sites More sharing options...
druttaro Posted February 5, 2013 Author Report Share Posted February 5, 2013 Thanks for the replies. I do have a test piece drying but wanted to see if it was even possible. I am not to concerned with color change to the ^10 glaze but don't want it to change texture. I am doing sugar skulls so will be happiest with good color on the outside. Link to comment Share on other sites More sharing options...
bciskepottery Posted February 5, 2013 Report Share Posted February 5, 2013 Something to think about . . . why not use a cone 5/6 claybody, glaze fire to cone 6 and apply the underglazes for the same fire? I am assuming your underglazes are for the sprigs attached to the outside of the bowl. Save yourself time and the cost of the extra firing. Link to comment Share on other sites More sharing options...
Mark C. Posted February 5, 2013 Report Share Posted February 5, 2013 I am a cone guy-and most glazes will change somewhat when fired again to lower temp. That is a shiny glaze can become matt etc. I am with Marcia on the cone 6 all the way body- Testing is the only way to know any of this as you are in unchartered territory. Mark Link to comment Share on other sites More sharing options...
druttaro Posted February 7, 2013 Author Report Share Posted February 7, 2013 I am taking a class at my university and have to use the clay available. Link to comment Share on other sites More sharing options...
Lucille Oka Posted February 7, 2013 Report Share Posted February 7, 2013 Why must you do this, are these the only glazes available to you? Link to comment Share on other sites More sharing options...
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