When I first brought my Slice machine home, it did not cut circles well. There were a few other basic shapes that did not cut well, especially if they were under 2". On the Basics 2 design card, there is a callibrate choice in the menu. I plugged my machine in, put waste paper on my glass mat, and selected callibrate. After it was finished (it reminded me of what my printer does when I put in a new ink cartridge), all my cutting issues were resolved. I can now cut any shape--any size--and it comes out perfectly.