I would not call this a professional guillotine. It is sufficient to cut small projects. I will be using it to cut books that I bound. They are only 100 sheets of paper, so it can cut them easily. The trick is getting the cutter tightened with the paper aligned correctly. This takes a bit of practice using this particular cutter. I found that stop arm, that looked like a windshield whipper to be hard to adjust and basically useless. You could spend more on a fancier cutter if you do a lot of work, this won't work for a busy 0rint shop. I got this for my personal use after my boss sold the Chandler Price we had at work. On the plus it is much smaller and I was able to set it on top of my antique sewing table.