16800 was projected, but I think it would be better a very rare 168000...
I will not use this case of course, the case was only a victim for my test. It is a good job, but I want a perfect job! The guys from GTG in cologne knews me, my watches and what I mean.
BTW: I did it with a drilling machine with 2400 r/min. First I pointed the correct position, then I used a 1mm drill to make a 0,5mm hole (lug must be in horizontal position!). It have to be that way, because the 1,2mm drill will not go in the material when the lug is in the (correct) slanting position!
Furthermore you need a quality-drill, if you have not the tools and knowhow to raze the drill again, you will need for every hole one drill! And of course it happens sometimes that the drill gets broken in the hole...
Believe me, it's not easy...