Manual or Electric Paper Cutters and Trimmers allow you to cut large stacks of paper (from 50 to 1000 sheets of 20# bond) in a variety of sizes. Stack Paper Cutters are operated manually, electrically or hydraulically. Manual paper cutting machines require the user to physically lift and press down on the cutting lever or blade handle to effect cutting. Electric cutters have an automatic motor driven cutting operation and some are programmable. Trimmers are divided into three categories: foam board trimmers, guillotine trimmers and rotary trimmers. Foam board trimmers cut standard, rigid, Sintra or other types of foam boards up to 1.18" in thickness. Guillotine paper trimmers are strictly manual, while rotary trimmers may be manual or electric. Newer generation electric rotary trimmers are now available with auto paper advance. The main difference between paper cutters and paper trimmers is that cutters allow you to cut a greater number of sheets of paper at one time by pushing a blade straight through your material, while trimmers allow you to cut a smaller number of different types of stock, including poster boards, mat boards, foam mounting boards, plastic, film, negatives, tissue and textiles usually by a blade slicing at an angle (guillotine or rotary).