.75 microns? Bah, may as well be a clapped out bridgeport clone! =). In all seriousness manual jig borers feel a little like a Monarch 10ee -- an absolutely inc

.75 microns? Bah, may as well be a clapped out bridgeport clone! =). In all seriousness manual jig borers feel a little like a Monarch 10ee -- an absolutely incredible machine that will never be built again due to how constraints have changed, that solves a problem that I will never actually have. Though if I lived out in the country someplace with a huge garage... Edit: to respond to your specific point it's the 3+ axis CNC that's the key thing, not the accuracy. They were that repeatable in the 50s, but not when interpolating a 3d spline! Can you even 'side mill' a #3 style jig borer without destroying it?