What Is Crazing Ceramics

Crazing is a term used to reference fine cracks that can be found in the glaze of pottery or china.

What is crazing ceramics.

Divgradcurl getty images. The amount it may affect the value depends on the extent of the crazing. Glaze crazing or glaze crackle is a network of lines or cracks in the fired glazed surface. A craze pattern can develop immediately after removal from the kiln or years later.

The definition of crazing is a network of fine lines in the glaze. It happens when a glaze is under tension. Sometimes items may have a couple of crazing lines on one side and not the other other times the crazing can look like a spider web and cover the entire item. Now if you are a collector and you want to insure your collection then a pr ofessional appraiser will most likely take crazing into account when giving you an insurance value.

Sometimes items may have a couple of crazing lines on one side and not the other other times the crazing can look like a spider web and cover the entire item. Crazing is a network of fine hairline cracks that appear on the glaze surface of a fired piece. Crazing is a defect. But if you are a collector for your own personal enjoyment then it just depends on how you feel about worth and crazing.

Porcelain is a ceramic known for its toughness and durability. Crazing is the product of stress. 7 8 in pottery a distinction is often made between crazing as an accidental defect and crackle when the same phenomenon often strongly. There are several simple techniques to clean antique porcelain.

Crazing translates to fine cracks in the glaze or surface layer of porcelain wares. Don t let crazing make you crazy. What is crazing delayed crazing on pottery. Crazing is a term used to reference fine cracks that can be found in the glaze of pottery or china.

It can also occur in pottery some plastics and composition materials such as the face of a composition doll that has not been properly stored. Characterised as a spider web pattern of cracks penetrating the glaze it is caused by tensile stresses greater than the glaze is able to withstand. There are two types of crazing immediate and delayed. Crazing can be present in varying degrees.

Sometimes occurs weeks or months later. However crazing or tiny cracks may show up over time and stains may set into the porcelain. Crazing can be eliminated while making pottery if good quality clay is used. Crazed pottery or ceramics is not food safe as the cracks can harbour bacteria or germs.

This type of damage is caused by the difference in the contraction rate in the body material of an object compared to the surface layer. Clay quality plays a vital role in pottery making. This defect can be produced through several situations one of which is at the time of firing. We lakeside pottery know of cases where the pinging sounds of newly developed crazing lines go for many years.