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5 Most Common Staple Gun Problems & How To Fix

I will give you the solutions to common staple gun problems like jamming, weak stapling, and misfiring. Learn easy fixes and maintenance tips to keep your staple gun in top shape for all your upholstery projects. Read more

5 Most Common Staple Gun Problems & How To Fix

In this post, I will dive deep into the world of staple guns, a tool indispensable in upholstery, and various DIY projects.

Staple guns can sometimes be tricky to handle.

Hence, I will explore common issues that users face with staple guns and offer practical solutions to fix them.

Key Takeaways

JammingUnplug, clear jam with pliers or screwdriver
Staple MisfiresCheck the power source, inspect for internal damage
Weak Staple PenetrationAdjust pressure settings, inspect for dull staples
Staple Gun Doesn’t WorkCheck the power source, and inspect for internal damage
Inconsistent StaplingClean magazine, use uniform pressure, check staple quality

3 Main Types of Staple Guns

Staple guns are powerful tools used for fastening materials through the use of heavy-duty staples.

They come in three main types: manual, electric, and pneumatic.

Each type has its unique advantages and common issues.

5 Common Staple Gun Problems and Their Solutions

frequency of common staple gun problems
The visualization above represents the frequency of common staple gun problems based on typical experiences.

Jammed staples appear to be the most frequent issue, followed by weak stapling and misfiring.

Furthermore, problems like the staple gun not working or inconsistent stapling are less common but still significant.

This data underscores the importance of regular maintenance and correct usage to mitigate these issues.

1. Jamming

A jammed staple gun is a common problem that can halt your project.

It happens when a staple doesn’t properly exit the gun, getting stuck in the mechanism.

This blockage prevents any more staples from being fired until it’s cleared.

Cause: Staples get stuck in the gun, preventing it from functioning.


  1. Safety First: Ensure the staple gun is unplugged or disconnected from its air supply.
  2. Open the Magazine: Carefully open the staple gun’s magazine.
  3. Remove Jammed Staples: Using pliers or a screwdriver, gently remove the jammed staple.
  4. Check for Damage: Inspect the magazine and the firing mechanism for any damage.
  5. Test Functionality: After clearing the jam, test the staple gun on a scrap piece of material.
  6. Prevent Future Jams: Use the correct staple size and avoid overfilling the magazine.

2. Staple Misfires

When you press the trigger and nothing happens, your staple gun is misfiring.

This issue can be both annoying and time-consuming, often happening when the staple gun fails to release a staple upon being triggered.

Cause: Occurs when the staple gun doesn’t release a staple when triggered.


  1. Correct Staple Size: Verify you’re using the appropriate size of staples for your gun.
  2. Reload Magazine: Ensure that the magazine is properly loaded and not empty.
  3. Check for Obstructions: Inspect the firing mechanism for any obstructions or dirt.
  4. Clean and Lubricate: Regular cleaning and lubrication can prevent misfiring.
  5. Spring Inspection: Check the spring for wear and replace if necessary.

3. Weak Staple Penetration

Weak staple penetration occurs when the staples don’t fully sink into the material.

This problem can compromise the quality of your work, leaving the staples partially protruding.

Cause: Staples don’t penetrate the surface completely.


  1. Adjust Pressure Settings: For pneumatic models, increase the air pressure.
  2. Check Staple Quality: Replace staples if they are dull or of poor quality.
  3. Examine the Surface: Some materials may require different staple types.
  4. Test on Different Materials: Experiment with various materials to determine the optimal settings.
  5. Maintain Your Tool: Regular maintenance ensures optimal performance.

4. Staple Gun Doesn’t Work

staple gun power problems

It’s a major concern when your staple gun doesn’t work at all.

This can happen due to various reasons, from power issues to internal damage, and it brings your work to a complete standstill.

Cause: The gun doesn’t operate at all.


  1. Check Power Source: For electric models, ensure they are plugged in; for pneumatic models, check the air compressor connection.
  2. Inspect for Damage: Look for visible damage to the staple gun.
  3. Internal Inspection: If comfortable, open the gun to inspect internal components.
  4. Seek Professional Help: Sometimes, internal damage requires professional repair.
  5. Regular Testing: Frequently test the staple gun to ensure it’s in working condition.

5. Inconsistent Stapling

Inconsistent stapling is when the staples are not evenly driven into the material.

It can make your work look unprofessional, with some staples deeper than others.

Cause: Staples are not evenly driven into the material.


  1. Clean the Magazine: Regular cleaning of the magazine ensures smooth operation.
  2. Uniform Pressure Application: Apply consistent pressure when using the staple gun.
  3. Staple Quality Check: Use high-quality staples for better results.
  4. Adjustable Settings: If your staple gun has adjustable settings, experiment with them for optimal performance.
  5. Practice and Technique: Improving your stapling technique can lead to more consistent results.

These expanded solutions and steps should provide a more detailed guide to resolving common staple gun problems, helping you maintain and operate your staple gun more effectively.


Staple guns are essential tools in various projects, but like any tool, they can have issues.

Understanding how to fix these problems can save you time and frustration.

Always remember to handle staple guns with care and follow the manufacturer’s instructions for use and maintenance.

Remember, the right knowledge and a bit of patience can go a long way in resolving these common staple gun problems.

By following these guidelines, you should be able to troubleshoot and resolve most staple gun issues effectively.

In the end, always prioritize safety when handling these tools, and don’t hesitate to seek professional help if you’re unsure about a problem.

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Aleksy Kazmer

Aleksy is a full-time blogger born and raised in Warsaw. After earning a degree in MS English from Oxford University, he began utilizing his skills as a content writer to express what he’s most passionate about. Whether it's home improvement, decor, furniture, cleaning products, or DIY projects. Aleksy has a natural curiosity to pursue hidden tips and share them with readers.