Staplers secure sheets of paper together in offices and homes every day. Under everyday conditions, attaching a small number of pages takes little effort. The arm presses down smoothly, the staple penetrates all layers cleanly, and the legs bend to hold the stack firmly in place.
When the stack grows thicker, nearing the stapler's handling limit, the conditions approach the edge of normal operation.
In this boundary state, the stapler maintains its core function completely. It drives the staple through the entire thickness, clinches the legs securely, and binds the pages as required. The process completes without issue, though the arm demands more consistent pressure, and its travel feels progressively firmer against the resistance of the dense material.
Here, the stapler operates at its limit for stack thickness, delivering reliable fastening with the available capacity fully engaged and little room for additional layers.