Cardboard will serve as the frame and support for your simple generator. Use a ruler to measure a cardboard strip that is 8 centimetres (3.1 in) by 30.4 centimetres (12.0 in). Cut this strip out with scissors or a utility knife. This single piece will be folded to form the frame. Use a ruler to measure along the length of the cardboard. Make your first mark at 8 centimetres (3.1 in). Your second mark should be at 11.5 centimetres (4.5 in), and your third mark should be at 19.5 centimetres (7.7 in). The final mark will be at 22.7 centimetres (8.9 in). This creates segments of 8 centimetres (3.1 in), 3.5 centimetres (1.4 in), 8 centimetres (3.1 in), 3.2 centimetres (1.3 in), and 7.7 centimetres (3.0 in). Do not cut these segments. Fold the cardboard along each mark. This will make your flat piece of cardboard into a rectangular frame. This frame will house the components of your electric motor. Push a nail through the center of the cardboard frame. Make sure you go through all three pieces of cardboard that are folded into the center. This will create the hole for your shaft. You can now insert a metal shaft, or use the nail as your shaft. The metal shaft does not have to be anything in particular. Any piece of metal that will fit through the hole and come all the way out the other side of the frame is acceptable. The nail you use to make the hole will work perfectly.
اقطع قطعة من الورق المقوى. ضع علامات على الورقة. اثنِ الورقة المقوّاة. مرر القضيب المعدني خلال إطار الدعم.