Dad's Almost-Fiftieth Birthday Keychain

My dad is aging further into his forties, but insists that he is just "almost fifty" so I made him a keychain based on the "PLATEZ" design to give him a tangible representation of his crisis.

This is a remix of the "PLATEZ" but their cc license does not allow derivatives. I made this from scratch in Fusion 360. I just used the measurements from the model they posted. I also made an OpenSCAD file but I found someone else had already made one.