👉 Grattices, also known as grating surfaces, are a type of surface that is made from a material that reflects light and allows it to pass through without being reflected back. Grattices can be found in various materials such as glass, wood, metal, and even plastics. The term "grattage" comes from the Greek word "grat," which means "to shine." This term implies that grating surfaces are used for reflecting light rather than absorbing it like other types of