The machines are probably so worn out that you'd never get an accurate cut or grind.
Educational institutions are so rough on equipment that they are useless in half the normal operating time. I know this from the computer labs in my previous job. Those poor keyboards and mice were never built for such rough handling, and the laser jets? 5,000 pages in a month after setting one up. They burned through 5 bales of paper (25,000 sheets!) in 3 months time, absolutely incredible.
The administration tried printing 2 pages in booklet format on one sheet, that went over well with the teachers (hee hee, I TOLD them that they would gripe), setting up restricted copy numbers (also caught flak from the instructors), but they cheated and printed over and over again as a workaround. They finally put ALL copier paper under lock and key, restricting access to the supply room, and THAT irritated everyone. Talk about being open to ideas and open channels of communications... Oh well, win some, lose some. I'm glad I got out of that zoo.