Thank you to the author for the idea. 

I don't like too much glue in 3D prints, because it often doesn't work in the workshop.
Therefore, I put all the guide elements together and printed them with a small support vertically (pic.1).

I modified the router base by adding a socket for the supporting element (the small cube that the author made of wood), I made a socket for it from the bottom, and the whole thing is covered with the first layer to print it better and faster (pic.2).
Later, all holes can be cut/drilled.

The supporting element can be permanently glued using superglue (or acetone in the case of ABS).
Additionally, I changed the shapes of both elements a bit to make them look better visually (corners).

Printing the whole thing took about 4 hours (ABS, 60 mm/s., 0.2 mm).