The rules for using a jointer involve several safety precautions and operational guidelines. First and foremost, it is crucial to read and understand the manufacturer's instructions before operating a jointer to ensure safe usage. Eye protection should always be worn while working with a jointer since there is a risk of wood chips or debris being thrown towards the operator. It is essential to keep both hands on the material being fed into the jointer, maintaining a firm grip throughout the process. Other rules include feeding the workpiece against the rotation of the cutterhead, using push blocks or sticks to guide smaller pieces safely past the cutting area, and ensuring that loose clothing or accessories cannot get entangled with moving parts.