Just tried this method and it works like a charm.
The trick to this method is to make sure you put your strips
the right way up. I just lay all my strips on my cutting board
then twist and lay the ends together like in the video, then
trim and cut with the ruler. BTW, I don't have the Creative
Grids ruler. I used my Easy Angle ruler and it works just
the same.
https://www.youtube.com/watch?v=KKQ9VS8e0lI