Threading spokes with a cyclo spoke threading machine is fun and easy. The cyclo spoke thread rolling die rolls the threads by way of cold forging. I find two passes works well, with the second pass set for a deeper thread. However, threading 60 spokes as for a highwheel of a Penny Farthing is a repetitive task. With the possibility of building a few wheels, I gave some thought to automating the process.
My solution uses a cordless screwdriver, a microcontroller, and an H-bridge driver, How many threads get rolled is easily configured by modifying the timing on the software running on the microcontroller and the speed setting on the screwdriver.
I have read about other (very expensive) machines that thread spokes very quickly at the pull of a lever. My solution, threads spokes at the touch of a button.