<aside> ☠️ Center Snap axes are based on World Space X/Y/Z, as are many of the functions in Lazy Bones. Try to always start rigging with your model a World origin, facing towards -Y direction.

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Center snap will snap points to the center of the models bounding box along a specific axis. The ‘Threshold’ value determines how far a point can be from the center before it is snapped. Snapped points are then merged together.

Before Snapping

Snapping on the X axis (too far for demonstration purposes)