Three letters fused into a single block. Yes, like the cover of Gödel, Escher, Bach.
Not all possible sets of letters work, so message me with your choice before ordering!
This will be 3/4-1" tall (2-3cm) tall, depending on which letters are chosen. If you want, happy to give you the STL file so you can print it at different sizes.
If two letters are enough, try here.