Tiny dtills

I thought I used tiny drills, I visited my watchmaker today, and we sat down and had a discussion about various
things the exorbitant cost of my watch repair etc. Some how the topic of tiny drills came upand I mentioned that my newly acquired drill press would handle .5mm drills with ease
and he pulled out his tiny drill set and a loupe so I could see them, the one I selected (not the smallest) was 0.18 mm.
He explained that you can not use them in a machine you can only use them very carefully by hand.

I think I've got some that size - although perversely, they're carbide PCB drills and can't be used by hand, only in a machine (as the slightest sideload will snap them).

Interesting you that, I am going to get some and try them in my machine just to see what occurs.