Once upon a time, ceiling fans had four simple blades and a motor. Nowadays they can be so much more. Modern materials open up new possibilities for ceiling fan shapes. Manipulating these materials into unique forms to create parts is simpler than it was with older materials. These advances in technology have redefined the overall shape of ceiling fans. By combining arched blades with contoured canopies, ceiling fan manufacturers can offer more designs than ever before, including modern curves.