I had in a box full of junk a really small motor, so I took it soddered some wires and attached a hook to it. Then I made the string with it. It makes the string really fast, I made a string in 3-6 minutes. It much faster than doing it by hand. The motor is powered by 2 AAA batteries. I’ll post a pic of the motor later.
Well, that’s still really slow, but yeah. I used my Lego Mindstorms to do this. I just let it run for a certain amount of time and wallah!
Here is the little motor: