Staring at the back of a staple gun and wondering how to pop it open is a rite of passage for every DIYer. Whether you are upholstering a chair or installing insulation, you can’t finish the job if you can’t reload the tool.
We break down exactly how to load manual, electric, and pneumatic staple guns so you can get back to work.
Key Takeaways
- Always disconnect power sources and engage safety locks before reloading electric or pneumatic tools.
- Locate the magazine release or pusher rod at the rear (or bottom) of the unit.
- Insert the staple strip with the legs facing downward (or up, depending on the specific loading mechanism).
- Slide the pusher rod back in until it clicks or locks securely.
How To Load a Manual Staple Gun
Manual staple guns are the workhorses of the tool shed. While designs vary slightly, most operate using a rear-loading pusher rod system. Here is the quickest way to reload.
1. Locate the Pusher Rod Latch
Hold the gun safely with the exit point pointing away from you. Look at the back of the tool. You will see a small metal rod with a hook or a latch system. This keeps the spring tension inside the magazine.
2. Release the Rod
Unhook the rod to release it from the chamber. Usually, you need to push the rod in slightly and then down (or up) to unlatch it from the catch. Once it releases, the spring tension will pop it out. Pull the rod completely out of the gun and set it aside.
3. Insert the Staples
Take a fresh strip of staples. Slide them into the open channel at the back of the gun. The legs of the staples must face down, straddling the guide rails. Push the strip forward until it hits the front of the nose.
4. Reinsert the Pusher Rod
Grab the rod you set aside earlier. Slide it back into the channel behind the staples. You will feel tension as the spring compresses against the staples. Push it all the way in and hook the latch back into its locked position.
5. Test for Jams
Grab a scrap piece of wood. Squeeze the handle firmly to fire a test staple. If it fires flush into the wood without jamming, you are ready to go.
How To Load an Electric Staple Gun
Speed is the name of the game with an electric staple gun. However, because they have a hair-trigger, safety is the priority here.
1. Cut the Power
Never load a live tool. Unplug the cord from the wall. If you are using a cordless model, remove the battery pack entirely. Locate the safety lock switch (usually near the trigger) and engage it.
2. Release the Magazine
Look for the magazine release mechanism. On most electric models, this is a button or squeeze-latch located at the rear or bottom of the magazine. Squeeze or press the release, and slide the magazine tray out.
3. Drop in the Staples
Electric staplers often have a “drop-in” channel. Place the staple strip into the tray. Note: Most require the staple legs to face up if you are loading the tray while the gun is inverted. Check the icon on the side of the magazine to be sure.
4. Loading Brad Nails
Many electric staplers also fire brad nails. Look for a picture of a nail on the side of the magazine nose. You typically have to load nails against one specific side of the channel (usually the side marked with an arrow) to ensure the firing pin hits them correctly.
5. Lock and Test
Slide the magazine tray back into the housing until it clicks firmly into place. Reattach your power source (plug or battery). Press the nose against a piece of scrap material to disengage the contact safety, and fire a test shot.
How To Load a Pneumatic Staple Gun
Pneumatic staple guns rely on compressed air to drive fasteners with serious force. Because they are connected to an air compressor, the loading process requires strict adherence to safety protocols.
1. Detach the Air Hose
This is non-negotiable. Disconnect the air hose from the coupler at the bottom of the gun. Even with the compressor off, residual air pressure can fire a staple. Disconnecting the hose eliminates this risk.
2. Pull Back the Follower
Pneumatic guns use a spring-loaded mechanism called a “follower” to push staples toward the nose. Press the release lever (usually a latch at the rear) and pull the magazine cover back, or pull the follower rod back until it locks open.
3. Load the Rail
Place a strip of staples over the magazine rail. Ensure the legs are facing down and straddling the rail. They should slide freely without binding.
4. Release the Follower
Unlock the follower mechanism and let it slide forward gently until it rests against the back of the staple strip. Do not let it snap forward violently, as this can damage the staples or the spring.
5. Reconnect and Fire
Reattach the air hose to the tool. Ensure your compressor is set to the correct PSI for the material you are using. Press the nose safety against scrap wood and pull the trigger to verify it is feeding correctly.
Safety Tips for Staple Gun Maintenance
Staple guns may look simple, but they cause thousands of emergency room visits every year. Keep these tips in mind to protect your hands and eyes.
Respect the Recoil
When a staple gun fires, it kicks back. If you are not holding it firmly, it can double-fire or bounce off the work surface. Maintain a firm grip and stiff wrist, especially with pneumatic tools.
Never Force the Mechanism
If the pusher rod or magazine tray feels stuck, do not force it. Pushing too hard can bend the internal springs or damage the guide rails. Jiggle it gently or check for debris blocking the path.
Wear Eye Protection
Staples can shatter or ricochet if they hit a knot in the wood or an old nail. Always wear safety glasses when operating any fastening tool.
Mind the Trigger Sensitivity
Pneumatic and electric staplers often have sensitive triggers (“hair-triggers”). Never walk around the workshop with your finger on the trigger, even if the safety nose is not depressed.
Empty Before Storage
If you have kids in the house, empty the magazine before storing the tool. A manual staple gun does not need a power source to fire; a curious child can easily squeeze the handle and launch a fastener.
FAQs
Do Staples Fit All Staple Guns?
No, staples are not universal. They are defined by three metrics: gauge (thickness), crown width (the top bridge), and leg length. You must use the specific series of staples recommended by the manufacturer (e.g., T50, JT21, or 18-gauge narrow crown). Using the wrong size will cause jams.
What Is the Screw on Top of a Staple Gun For?
That screw is the tension adjustment knob. Tightening it increases the spring tension, driving staples deeper into hard materials. Loosening it reduces the force, which is better for delicate materials or softwoods.
How Do You Put Staples in a Trojan Staple Gun?
Pinch the latch at the rear of the gun and pull it down and out to release the pusher rod. Slide your staple strip into the channel with legs facing down, then reinsert the rod until it clicks into place.
What Size Staples Go in a Craftsman Staple Gun?
Most standard manual Craftsman staplers take heavy-duty staples in sizes 1/4, 5/16, 3/8, 1/2, and 9/16 inches. However, always check the sticker on the side of the tool or the bottom of the magazine to confirm the specific series required.
Why Is My Staple Gun Not Shooting Staples?
The most common reasons are a jam in the nose, an empty magazine, or using the wrong size staples. Unplug the tool, remove the pusher rod, and check the exit point for bent fasteners. Clear them with needle-nose pliers before reloading.
How Do I Know What Staples My Gun Uses?
Look for a label or stamped text on the side of the staple gun or along the bottom of the magazine. It will list the compatible staple series (like T50) and the acceptable length range (e.g., 6mm to 14mm).
Lock and Load
Loading your staple gun shouldn’t require a wrestling match. By identifying your release mechanism and using the correct staple size, you can reload in seconds and keep your project moving.
Remember to treat every staple gun with respect. Disconnect the power, watch your fingers, and never point the tool at anyone. Now, get back to it.
