Practice
Why Is My CNC Drilling a Hole in the Air? The Z Story
Air-drilling means the machine's idea of Z disagrees with reality: a missing G43, the wrong H number, a stale work offset Z, or the cycle's R-plane math.
Lawrence Arya··4 min
Guides
Z Axis Overtravel on G28: Where the Waypoint Math Went Wrong
An overtravel alarm on G28 means the intermediate waypoint, not the home position, landed outside the machine's travel. The waypoint math, and the fix.
Lawrence Arya··5 min