In addition to the 3D printed parts, you will need cylinder shaped magnets (10 mm diameter and 4 mm heigh) and you will need one magnet per 2 bit slots (the same magnet is used from both sides) You will also need a short piece of 3 mm nylon coord, maybe something like 20 cm. To decorate the embossed text, you need some sort of paint (I used an acrylic pen) and rubbing alcohol or isopropyl alcohol.