What is the purpose for the anvil on my hand stapler?
Question
What is the purpose for the anvil on my hand stapler?
Answer
On a hand stapler you have a silver metal anvil on the base of the stapler. This anvil is where the staple legs are formed either in an inward (standard clinch) or outward (pinning)fashion. If your staples are forming outward, this means that the anvil has been turned. To resolve, push the button under your anvil upward. This will raise the anvil, now rotate the anvil. This will change the position of the forming slots.
Pinning (the staple legs are formed outward) is an old style of securing papers. You would be able to remove the staple without damaging your papers, and add additional papers. One draw-back to this style of fastening is that the staple leg is exposed and will catch on other objects.
* from the swingline FAQ