If you tie flies, you will likely stack hair.
This video is intended to show a variety of hair stackers, how you use them, and why you use them. As you'll see in this video, I usually default back to my tried and true brass stacker.
I also discuss the importance of cleaning the hair before stacking, some information on thread control, and how to properly cut and tie in a hair wing. Overall, I am hoping you find this video helpful.