If you like my work I hope you'll consider supporting me on Pateron: https://www.patreon.com/3DPrintingProfessor Subscribe to me on YouTube: https://www.youtube.com/user/mrjoesays Lots of errors on this one. Some of the pieces aren't properly centered. I admit I didn't spend a whole lot of time on the effort. If the pieces are too small feel free to scale them up by 2. I was going for a pocket sized version. Printed them and they do work.