I made a machine to cut pin headers, and I thought I would share it here.

I will add a screen to it at some point so you can change the numbers you wish to cut. Currently, it has three start buttons, a Stop Button, and a reset button.
Start button 3 cuts them into 3s, the first two being 2s.
Start button 2 cuts them into 2s
Start button 1 cuts them into 1s

You can load 7 header strips into the machine using a cartridge, I have several cartridges that can load different types of headers, male/female.

https://www.youtube.com/watch?v=6iDfXhbqKis