Paper Cutter and Premier Cassette Safety-Trim 10-Sheet Trimmer are interchangeable except that a trimmer is applied to low volume machines and a cutter is applied to all volumes. Rotary Trimmers is a valuable machine used for projects. The two popular Sheet Trimmers are Rotary and Guillotine Trimmers. Sheet trimmers are popular for arts and crafts. Buy Sheet trimmers and other discount office supplies at Shoplet.com.