What is glaze firing?
As previously mentioned, fabrication of ceramics doesn’t take just a few steps. What you have to pay great attention to because it demands understanding and accuracy is glaze firing which is the process of bringing clay and glazes up to a high temperature until they are mature for either glossy or matt glaze.
Appropriate firing temperature is 50-100 Celsius. However, if the work is large and thick, the firing duration must take longer. If you use pyrometric cone to gauge heatwork during the firing, leave the ceramic materials fired for about half an hour for perfect finishing.
What is very important and must be strictly paid attention during the glaze firing is
to remove all the dripping glaze to avoid drippings on the slap. Leave some spaces between the ceramic works to prevent the glazes melt together. When using the high firing temperature, kiln wash or stilts can be used to prevent glaze from sticking to the shelves. After firing, leave the kiln at 100 Celsius per hour for about a day to prevent cracking.
In addition, before loading ceramic works in the kiln, the chamber must be clean to avoid small particle on the works causing defect and drop in price.