I just made this
regular icosahedron with letters A-T for you with my general purpose OpenSCAD regular polyhedron script which I created a while ago to design an invention game. I slightly blended the corners of the die to make it roll easily. If you like I can scale it to any size, make it more angled or more round, however at this size it already has some thin walls within the letters (at the sharp edges of the letter "M" for instance". But if I am able to print it on my Ultimaker 1 Shapeways should be able to print it on their high-end printers as well (hopefully
If you need I can create any regular polyhedron with almost arbitrary symbols on each side, angled, rounded, solid, or holo with this script. To create a 24-sided die would take a bit longer as I then had to first enhance the script in order to also calculate non-regular polyhedrons as well.
Have a nice day!
Sven
Last edited: Feb 21, 2014