This simple switch makes life much easier because it introduces more standardization to the shop floor, reduces the burden on operators, increases setup speed and dramatically reduces the chances of human error. All of which saves time and realizes return on investment – and each additional machine helps increase the rate of return.
Micromachining, cutting where the volume of chips produced with each tool path is very small, is not a high-speed operation in relation to chip load per tooth. Rather, it involves a high spindle speed due to cutter diameter. The part may be physically larger, but details of the part require ultra-small profiles achieved only by micromachining. In other words, micromachining is not limited in scope to only miniature parts.
With a little knowhow and the right tools, see how you can significantly reduce cycle time by rough boring instead of performing a helical interpolation with a mill.