Glass firing is a process used in glass art and manufacturing where glass pieces are heated in a kiln to a specific temperature. This heating causes the glass to melt and fuse together, allowing artists to create intricate designs and shapes. The temperature and duration of firing depend on the type of glass and the desired outcome. During glass firing, the kiln must be carefully monitored to ensure even heating and prevent defects. After firing, the glass cools slowly, a process known as annealing, which helps relieve internal stresses. This technique is essential for producing durable and high-quality glass products.