Basic Magnetic Paper Cutter Guides

I have a very old paper cutter at my office that the powers that be won't replace, so I've been steadily trying to improve it as best I can using our 3D Printer. This is a very simple model for a strong set of magnetic paper guides to replace the old one that was not only crooked but wouldn't tighten. The print pauses once the troughs for the magnets have been set, the magnets slide in easily and didn't mess with the rest of the print at all.