There were only a handful of major developments in hockey stick technology between the 1920s and the 2000s. Foremost among these was creation of the laminated stick in the 1940s, where layers of wood were glued together and sandwiched to create a more flexible and durable design. In the 1960s, companies began adding another lamination of fiberglass or other such synthetic compound as a coating, which further added to the durability and usability of the stick. Also in the 1960s, players began curving the blade of the stick, which dramatically changed the physics affecting players' shots.