Drilling hard steels

[Roboteernat]

drilled like this to keep permanently lubed and cool.


drill slow

Oh dear god! Hold the drill steady! Who else cringed watching the glass get scratched by a wandering drill?

Remember when drilling anything it's about speeds, when turning on lathe or milling its speeds and feeds.

Also use some cutting fluid as apposed to water with metal, as the oils lubricate the drill and stop the metal sticking to the tips of the drill flutes.