Stonfo Whip Finisher

This is an excellent whip finisher, I find that the angle of the bends and the bending action of the second arm makes it much less likely for the thread to slip. While I initially thought I would dislike the fact that this does not rotate like a standard whip finisher, after 3 files I didn't even notice.
If you find that you're having trouble getting thread to stay on your whip finisher, give this one a try.