Hi,
I have to machine a certain hole in a given metal alloy. The hole is indicated with its diameter and tolerance, in addiction there can be indications about its cylindricity and/or the perpendicularity of its axis respect to some reference datum. I am wondering if there is any guide to choose the correct size/geometry of the drill bit or the sequence of operations (e.g. drilling/reaming or drilling/reaming/boring or just drilling) to be performed to obtain the required hole.
Many thanks