Frustro: impossible font

Hungarian designer Marzi Hegedus (Martzi Hegedűs) created the original font Frustro , which is based on the idea of impossible figures - one of the types of optical illusions. Like the classic Penrose triangle , the letters of this font can be represented directed either to one or the other side, and it is impossible for them to create 3D models.


^{Penrose Triangle}

In his blog, Marci Hegedus explains how he achieved this effect, using the letter 'R' as an example: he combines the left upper part and the right lower part of two 3D models, after which he draws a projection.
')



Here is the full set of characters.