The document provides safety rules and tips for using a thickness planer, including that stock must be at least 8 inches long, the operator should never stand directly behind the planer in case of kickback, and they should let go of the stock after it starts through the planer. Useful tips are to adjust the planer to remove 1/16 of an inch of material thickness, rotate the hand wheel by 1/2 a turn to reduce thickness until proper, and plane all stock at once to ensure equal thickness.