Works like a charm. Original model was great, but I like the full size one more.
Print the tang on its side, and the arms standing up, you will need to mirror the arm, if you print 2 of the same arm it will look weird.
The author remixed this model.
Resigned the arms from scratch, want a fan of the holes so I made the whole thing flat. Added about 1½" of length to make it more satisfying to open, as well as able to do tricks with.
You will need:
4 M3 nuts
2 shorter M3 bolts
2 Longer M3 Bolts
1 Utility Knife blade