Depending on your material (preferably blue, of course), you have to print thinner or thicker to get a translucent object. I supply two different STLs, one prints with one layer 0.1 or 0.2 mm thick, the other 0.3 or 0.4 mm (with layer thickness 0.1 or 0.2). Or you use the Blender file provided to adjust the thickness; two vertex groups allow for an easy selection of the relevant sections.