Jan 23, 2018· You also can use it as a desk top cutter. The blade on this unit is a hardened steel, razor sharp, 17" blade. It will easily cut 80g paper, 400 sheets high or approx 1.5". However, should you ever need to replace the blade, this cutter is designed so that it is very easy to do. The heavy duty paper cutter has an easy replaceable blade.