How do you build a Punch Designix, when you need four shale to build it? You start getting shale in the Medium, but without the Punch Designix you can't create a Cruxite Artifact, so you can't get into the Medium. That is a paradox ...

The card to create the Cruxite Artifact is prepunched and requires no material to create it. The Punch Designix is not needed to enter the game.