thermal shock

Wild Crow Farm's beautiful new handmade pieces of stoneware are dishwasher, microwave and oven safe unless noted specifically on individual listings.  Thermal shock is a variation in temperature which causes tension in a material. It frequently causes breakage in materials, and is most common in brittle materials such as ceramics. This is a process that takes place abruptly when there is a sudden variation of temperature, either from hot to cold or vice versa. This means that if you pour boiling water in your cup too quickly, or put a cold piece of pottery in the oven, it may cause small cracks in the glass glazes.  Please change temperatures slowly.…