Electric pencil sharpeners work faster than manual sharpeners and are more effective at creating a smooth, even edge to the tip and inner lead.
For making this homemade electric pencil sharpener you will need: alkaline 9v battery and connector,small servo motor,micro push switch,top of bottle with cap and pencil sharpener.This electric sharpener operates much faster than any normal pencil sharpener and is a very useful gadget to be showcased on your study table.
Before the development of dedicated pencil sharpeners, a pencil was sharpened by whittling it with a knife.
Pencil sharpeners made this task much easier and gave a more uniform result. Some specialized types of pencils, such as carpenter’s pencils are still usually sharpened with a knife, due to their flat shape, though since the 2000s a fixed-blade device with a rotatable collar has become available.