Tantillus (Ultius) upper SLIDE-ON corners - Ultius upper corners

I have made many new parts for my Tantillus, which I now call an Ultius, and had to remove the upper corners many, many timers.
It was really tedious having to do it in a certain sequence, so I quickly cut away pieces with my Dremel.

This is the printable corners, which you can put on even when all the rods are in place.