I was looking for a drill able to make the holes of my custom PCB.This drill support is designed for a high speed motor diameter 52 mm.Since it is rather heavy, I designed carefully the vertical motion mechanism, to insure maximal alignment of the motor during drilling.Most of the non-printed parts come from a very cheap Chinese 1610 CNC.I redesigned some of them for my project.The motor can me moved first using the wheel at the back to adapt the height for a series of holes. Then, one can use the lever at the left for each drilling.