How do you load a hyper tough light duty staple gun?

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Furthermore, what is the screw on top of a staple gun for?

The purpose of this screw is to prevent the gun's magazine from being removed or fall out during use. Take a screwdriver and merely remove the bolt, and then leave it at a visible place.

Beside above, can you use regular staples in a staple gun? They are, however, extremely useful, and are safe to operate if you use them properly. They can penetrate thick or dense materials that a normal office stapler cannot. Most staple guns use a trigger at the top of the gun to propel a staple with force from the bottom of the gun. Insert a row of staples into the tray.

Also asked, why is my staple gun not working?

Open the staple gun and remove the bar of staples. If this does not work, snap the head back down on the staple gun (without replacing the staple bar) and slam the head of the stapler 10 times against the heel of your shoe or other rubber surface. Often this combination is enough to dislodge the staple.

How does a staple gun work?

Manual staple guns operate on "you" power. Portable and relatively safe, the squeeze mechanism lifts a plunger --- the staple piston --- to engage bent tension bars, which slip off hooks and onto a loader, snapping the firing piston and sending out a staple.