I was struggling with the fact that I didn't have a suitable printer to make templates for drilling record Nipkow discs. Even when I got them printed somewhere, paper templates are a pain to get right.
So I was inspired to make a device that can be used in conjunction with a drill press to almost automatically drill the disc. It uses two stepper motors, one to rotate the disc and one to move it back and forth.
It is all controlled by an Arduino. You need to do is enter the parameters and then it will go to the hole positions one by one and I just press the drill every time it stops.
There are still some quirks I need to work out -- a little bit of binding and some backlash on the rotational stepper which are making the accuracy somewhat less than it should be.
But regardless, I used to successfully drill a new disc. I'm going try to mount it in my monitor to see how it looks.