A paper cutter knife, also known as a paper trimmer or guillotine, is a tool used to cut paper with precision. It typically consists of a flat base, an adjustable guide, and a sharp blade mounted on a lever arm. The user places the paper on the base, lines it up with the guide, and then presses down on the lever arm to cut the paper.
Paper cutter knife blade come in a variety of sizes, from small handheld versions for trimming individual sheets of paper to large industrial models capable of cutting through stacks of paper at once. The blades are usually made of steel and may be straight or curved, depending on the specific application.