Summary

I modified Mortenstein's great design to fit my needs and also used it and a video I saw from a beekeeper to make a smaller one piece robbing screen.

The mods are slightly different hole pattern with same size holes. I just decided to have some fun with it.
I changed the top opening to have two of them that are wider and less deep, 51 x 9 mm.

On the small one, I used a similar pattern spaced a little tighter and used the 51x9mm opening at the top. This one is meant to be use with an entrance reducer.

To printer, both should have support with the outside face facing down.

Don't use black filament

Hold in place with pushpins if temporary or screws if permanent.