👉 Decasting is a process of removing a part or section from a larger piece of glass, such as a crystal or a plate glass. This can be done using techniques like cutting, drilling, or other tools. In the context of crystal and glass, decasting refers to the process by which a piece of glass is broken down into smaller pieces that are then used for making new pieces or designs. For example, if you have a large crystal glass plate that needs to be cut into smaller pieces,