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Q: Why is my glaze flaking off my bisque pot?
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How do you get the excess glaze off of the bottom of your already fired pot?

the best way to get off a small bit of glaze off the base of a pot (like small bits from a kiln shelf) is to use a carborundum/sharpening stone and slowly grind it down


Can more than one type of glaze be used on each clay pot?

Yes, as long as the glazes are meant to be fired to the same cone. Putting a cone 6 and a cone 10 glaze on the same pot would not be a good idea. But putting two, three, four, etc. glazes of the same cone on one pot is perfectly fine. Just understand that glazes may be stable by themselves, but when another glaze is added on top that may create instabilities such as crazing or running. The biggest problem I have had with combining glazes on one pot is running. Just make sure to put the pot on stilts or on a waste slab so you don't have to grind glaze off the kiln shelf.


Can you use more than one type of glaze on each clay pot?

Yes you can.


Why do you glaze a pot?

this is for dry glazeChoose a container that is two times larger than the total amount of finished glaze. Select a 1- to 5-gallon container. If you're making 1/2 gallon of glaze, use a 1-gallon container. This allows enough room to coat the pottery.2Adhere masking tape 1/4 to 1/2 inches from the bottom of the pottery. Placing the tape around the base of the piece helps later on during the firing process.3Pay attention to the cone number. There are a variety of kilns for firing pottery. Each uses the cone number as an indicator for the kiln type. Unless experimenting, use the specific type recommended.4Create a caramel dry glaze (cone 10) by combining 50 grams of pumice stone and 50 grams of rottenstone. For a satin green dry glaze (cone 10) replace the rottenstone with 14 seltzer tablets and 10 grams of talcum powder to the 50 grams of ground pumice. Grind the solid materials into a powder form5Measure dry ingredients one at a time. Pour them into the mixing container. To produce the best results, weigh all chemicals accurately.6Secure the sealable lid on the bucket. Place the container on its side and gently roll it on the floor for 1 to 2 minutes. Allow the dust to settle for at least 1 minute. Remove the lid after the dust has settled.7Apply the glaze to the pottery by dipping the piece into the dry glaze.


How many times do you have to fire your clay art project if it is glazed?

You usually fire the object twice. The first time, after the raw clay piece has completely dried. This is called the bisque fire. It is a lower temperature firing that makes the clay harder, through a chemical change that comes with the heat. Sometimes, with low fire earthenware, the bisques is actaully fired higher than the glaze firing. The piece is then strong enough to easily handle for the application of the glaze, which is a suspension, in water, of glass making chemicals , such as silica and other color making chemicals . The piece is then fired once more to a higher temperature to melt the glass making chemicals. The piece undergoes another chemical change at the high temperature, which renders the pot more vitreous, making it very strong. There are types of pottery that is created by once firing even when it has glaze. It is difficult to put the glaze of the unfired bone dry pot but some traditions such as Korean onggi jars are done this way. Chun pottery was once fired as well. Some salt and soda and wood fired glazed work is done this way as well. This is easier becuase the glaze is an atmospheric glaze rather than applied as a liquid. When once firing the pot must be very slowly and carefully heated for the first 1000 degrees F or so so the pot does not explode. Much historic pottery such as ancient Greek looks to lay people as though it is glazed but it was slip decorated and once fired. Sometimes pottery is fired many times more than this. Ming vases were done this way with each successive glaze being a lower temperature one and the final glaze being the very low temperature silver or gold metallic luster glazes. It is often used to get layered glaze effects and effects where glazes fire at very different temperatures.

Related questions

How do you get the excess glaze off of the bottom of your already fired pot?

the best way to get off a small bit of glaze off the base of a pot (like small bits from a kiln shelf) is to use a carborundum/sharpening stone and slowly grind it down


Can more than one type of glaze be used on each clay pot?

Yes, as long as the glazes are meant to be fired to the same cone. Putting a cone 6 and a cone 10 glaze on the same pot would not be a good idea. But putting two, three, four, etc. glazes of the same cone on one pot is perfectly fine. Just understand that glazes may be stable by themselves, but when another glaze is added on top that may create instabilities such as crazing or running. The biggest problem I have had with combining glazes on one pot is running. Just make sure to put the pot on stilts or on a waste slab so you don't have to grind glaze off the kiln shelf.


What is undergaze made out of?

I think you mean the word 'underglaze' which is whatever is under the glaze on a pot. So you can speak of 'underglaze colours' or 'underglaze painting' and so on. Because glaze is the final coating on a pot, just about everything else is 'underglaze' work. There is also 'On-glaze' painting, which what it says ---I bet you guessed that one o.k. !


Can you use more than one type of glaze on each clay pot?

Yes you can.


Why is a pot blue?

Probably the most common reason for blue in a ceramic pot is the inclusion of cobalt either as an oxide or carbonate in the glaze or clay itself.


Why do you glaze a pot?

this is for dry glazeChoose a container that is two times larger than the total amount of finished glaze. Select a 1- to 5-gallon container. If you're making 1/2 gallon of glaze, use a 1-gallon container. This allows enough room to coat the pottery.2Adhere masking tape 1/4 to 1/2 inches from the bottom of the pottery. Placing the tape around the base of the piece helps later on during the firing process.3Pay attention to the cone number. There are a variety of kilns for firing pottery. Each uses the cone number as an indicator for the kiln type. Unless experimenting, use the specific type recommended.4Create a caramel dry glaze (cone 10) by combining 50 grams of pumice stone and 50 grams of rottenstone. For a satin green dry glaze (cone 10) replace the rottenstone with 14 seltzer tablets and 10 grams of talcum powder to the 50 grams of ground pumice. Grind the solid materials into a powder form5Measure dry ingredients one at a time. Pour them into the mixing container. To produce the best results, weigh all chemicals accurately.6Secure the sealable lid on the bucket. Place the container on its side and gently roll it on the floor for 1 to 2 minutes. Allow the dust to settle for at least 1 minute. Remove the lid after the dust has settled.7Apply the glaze to the pottery by dipping the piece into the dry glaze.


What will happen if you add hot water to a earthen pot?

It depends on whether or not the pot has been covered in glaze, or whether the pot has been fired. If neither has been applied, or if the pot has not been fired, the water make cause the pot to fall apart.


How is vegetarian tomato bisque soup made?

Vegetarian tomato bisque soup is made by first sweating onions and oregano over medium heat with olive oil. You must then add flour, tomatoes, chicken broth, salt and pepper and bring the pot down to a simmer. After ten minutes, your tomato bisque soup should be ready for consumption.


What is a glaze?

The glass in a frame. Commonly the window of a house or the glaze.The word Glaze means any extra surface coating on a thing .....Like doughnut gets a soft sugar glaze ... while a clay pot gets a liquid glaze heated into a Hard glaze.....or the runner had a glaze of sweat on his face...... um Oh yes... glass too is known as glaze so too is the putty used to seal it into its frame....I can only assume they get this odd usage of the word because the glass is an extra coating on the building


How many times do you have to fire your clay art project if it is glazed?

You usually fire the object twice. The first time, after the raw clay piece has completely dried. This is called the bisque fire. It is a lower temperature firing that makes the clay harder, through a chemical change that comes with the heat. Sometimes, with low fire earthenware, the bisques is actaully fired higher than the glaze firing. The piece is then strong enough to easily handle for the application of the glaze, which is a suspension, in water, of glass making chemicals , such as silica and other color making chemicals . The piece is then fired once more to a higher temperature to melt the glass making chemicals. The piece undergoes another chemical change at the high temperature, which renders the pot more vitreous, making it very strong. There are types of pottery that is created by once firing even when it has glaze. It is difficult to put the glaze of the unfired bone dry pot but some traditions such as Korean onggi jars are done this way. Chun pottery was once fired as well. Some salt and soda and wood fired glazed work is done this way as well. This is easier becuase the glaze is an atmospheric glaze rather than applied as a liquid. When once firing the pot must be very slowly and carefully heated for the first 1000 degrees F or so so the pot does not explode. Much historic pottery such as ancient Greek looks to lay people as though it is glazed but it was slip decorated and once fired. Sometimes pottery is fired many times more than this. Ming vases were done this way with each successive glaze being a lower temperature one and the final glaze being the very low temperature silver or gold metallic luster glazes. It is often used to get layered glaze effects and effects where glazes fire at very different temperatures.


Can you re glaze all kinds of porcelain?

Depends on exactly what you mean ---- of course you cannot really remove the fired glaze and then apply another one but it is often possible to paint ceramic colours onto a fired item and then re-fire it. If its very old then there may be a problem with cracking of the pot or crazing of the glaze. In the end you just have to try it and hope for the best!


Where should you NOT put glaze on a clay pot?

You should not put glaze on the bottom of a clay pot where it will come into direct contact with surfaces when placed down for firing. The glaze could cause the pot to stick to the kiln shelf during firing and result in damage to both the pot and the kiln.