Further informationson the exhibit "Sand Engraver"
For this to succeed, you have to write the name in mirror writing. And it doesn't run from left to right, but from right to left. In addition, every single letter must be written mirrored in the middle axis so that the word can be read afterwards in the mirror.
However, this procedure only works with the Latin script. In Hebrew or Arabic it is the other way round, because in these languages the conventional spelling runs from right to left.