Those little Oldaks are very good drills for drilling PCBs and other miniature work.
The better control is because the rotating shaft doesn't have to have a sliding quill which needs a degree of clearance (== slop) to be able to work. We had one in the lab at HP, all complete and as new.
Sometimes drills just don't cut it, and for a bit of antenna work you need to break out the oxy-propanene cutter...
https://www.youtube.com/watch?v=RpXL_QaK17E
Yes, this guy is cutting away at the thing he's standing on....
Mind you his helper is risking his life smoking that cigarette. Radio work is not without its risks.
David