How do I maintain my paper cutter to make it last longer? Protect the blade, clean impurities from the blade in a timely manner, and reduce the frequency of use on hard materials. Is there any way to make the blade sharp? The blade can be properly sharpened using a file. How will this cut cardboard? A layer of cardboard is easy to cut down, the cardboard is too thick or cut several layers of cardboard at a time, it will become difficult, so that the edge is easy to become blunt. Is there anything you need to know about using this paper cutter for the first time? The base plate of the paper cutter may have some protective grease that you can clean off with a clean rag. Where is the 0 cut line located? The position of the blade cutting the paper is the position of the 0 cut line. Perfect Size12-inch paper cutter can easily trim various sizes of paper.such as A4, B5, A5, B6, B7.This paper cutter / trimmer offers guillotine cutting of up to 15 sheets duplicating paper.Meeting different size and quantity needs. Precise EfficientThe base of the cutter has both metric and imperial scales and is laser printed so it never loses its color. The magnetic paper guide accurately guides the paper position to ensure cutting accuracy.The ergonomic design of the handle makes cutting simple and easy. Safe DurableThe clamp next to the blade keeps your fingers away from the blade.Cutting easy and safe, never worry about finger cuts.Steel base material is sturdy and durable, capable of holding weight effortlessly, ensuring long-term use. Wide Application Ecraft paper cutters and trimmers can satisfy various trimming needs: cutting cardstocks/cardboards/vinyl papers, photos, pictures, business cards, labels, scrapbooking and paper DIY handicraft projects, ideal for use at offices, homes, printing shops, photo studios, and so on. Product After-SalesOur ecraft paper cutters also come with exceptional after-sales support, ensuring that you're always taken care of even after your purchase is complete. Notice: Keep Paper cutter away from Children under 12.