Machine Alignment Checks for Deep Hole Drilling
Why Alignment Matters Machine alignment is the foundation of every straight hole you drill. If the machine is not aligned, nothing else you do will fix the hole straightness problem. I learned this lesson the hard way early in my career. I spent two days chasing a hole deviation problem on a gun drilling machine. I changed bushings, adjusted feeds and speeds, and swapped drills. Nothing worked. The machine had drifted out of alignment by 0.04mm per meter while I was looking the other way. ...