Simple Mini PCB drill press

For a long time, I had an idea to make a small PCB drill press, because I broke just to many drill bits with hand drill machine. And the large stand-up drill press is just too big and clumsy for PCB drilling.
The basic idea was to use linear bearings in combination with 8mm rods. I searched for already made verinants on the internet but found nothing suitable. I wanted to make as simple but effective a variant as possible. So I decided to make my own design of mini PCB drill press.

Today I upgraded the Mini PCB drill press with a PWM module
https://youtu.be/zuqQ3NQ7dx8