They’ve tweaked their laser cutter settings to allow not just cutting but also welding of acrylic. This lets them build up 3D objects out of acrylic slices with no human intervention by first ...

And as far as liquor-proofing all the cardboard goes, [EEEEEEEEEDEN] designed new board tiles and cards, laser cut them from acrylic, and painstakingly painted them all with Plasti-Dip spray.