How To Use A Rivet Tool – For Permanent Metal-To-Metal Fasteners
To use a rivet tool, insert the rivet mandrel into the nosepiece, place the rivet body through your pre-drilled holes, and squeeze the handles until the mandrel snaps off.
Always ensure your drill bit size matches the diameter of the rivet for a tight, secure connection.
If you have ever tried to join two pieces of sheet metal and found that screws just won’t hold, you are ready to graduate to riveting. Many beginners are intimidated by the process, but once you understand the mechanics, it is one of the most reliable ways to create a permanent mechanical bond.
I’ve spent years in the workshop using these fasteners for everything from custom automotive panels to repairing aluminum toolboxes. By learning how to use a rivet tool, you gain the ability to create industrial-strength joints that won’t vibrate loose like threaded fasteners often do over time.
In this guide, I will walk you through the entire process, from selecting the right hardware to the final “pop” that signals a successful install. Grab your safety glasses and your drill; we are going to turn those loose metal sheets into a rock-solid assembly.
Understanding the basics of blind riveting
Before diving into the mechanical action, it helps to know what you are actually doing. A pop rivet—or blind rivet—consists of two parts: the hollow tubular body and the central pin, known as the mandrel.
When you operate the tool, it pulls the mandrel through the rivet body. As the mandrel head is pulled into the tube, it expands the metal on the backside, creating a permanent “shop head” that locks your materials together.
This is called a “blind” rivet because you only need access to one side of the workpiece. You don’t need a nut or a backing plate on the other side, which makes it perfect for enclosed spaces or tubing where your hands can’t reach.
Essential tools and material selection
You don’t need a massive workshop to get started. A basic hand-operated rivet gun, which you can pick up at any hardware store, is more than enough for 90% of garage projects.
Beyond the tool itself, your choice of rivet material is critical. You should always match the rivet material to the material you are joining to prevent galvanic corrosion—a chemical reaction that happens when two dissimilar metals touch.
- Aluminum rivets: Best for general-purpose DIY projects and aluminum sheeting.
- Steel rivets: Use these when you need higher shear strength in steel-to-steel connections.
- Stainless steel rivets: The gold standard for outdoor or marine environments where rust is a concern.
How to use a rivet tool step-by-step
Now that you have your gear ready, let’s get to work. The process is straightforward, but precision is key to ensuring the rivet sits flush against the surface.
1. Prepare your holes
Use a drill bit that is just slightly larger than the diameter of the rivet shank. If the hole is too small, the rivet won’t fit; if it is too large, the joint will be loose and weak.
2. Align the materials
Clamp your two pieces of metal together firmly. If the pieces shift while you are working, the hole alignment will be off, and the rivet won’t seat properly.
3. Insert and pull
Place the rivet body into the hole. Slide the rivet tool’s nosepiece over the mandrel. Squeeze the handles firmly. You might need to squeeze, release, and squeeze again until you hear the distinct “snap” of the mandrel breaking off.
4. Check your work
Inspect the shop head on the backside if possible. It should be neatly expanded and pulled tight against the material. If it looks mangled, you likely used the wrong size hole or didn’t keep the tool flush against the surface.
Pro tips for better riveting results
Even experienced makers occasionally run into issues. One of the most common mistakes is not keeping the rivet tool perpendicular to the surface. If you pull at an angle, you risk bending the mandrel or leaving a gap between your materials.
Another pro tip involves using a bit of lubricant on the mandrel if you are doing heavy-duty work. It makes the tool operate much smoother and reduces the amount of physical force required to snap the pin.
If you are joining soft materials like thin plastic or leather, use a “backing washer.” This distributes the pressure over a larger area, preventing the rivet from pulling through the soft material when it expands.
Common troubleshooting and maintenance
Sometimes the rivet gun can jam. This usually happens because a piece of a broken mandrel is stuck in the jaws of the tool.
If this happens, simply unscrew the nosepiece and use a small pick or pliers to clear out the debris. Keep the internal jaws clean and lightly oiled to ensure they grip the mandrel effectively every time you pull the handle.
If you find that your rivets are loose after installation, you are likely using a rivet that is too short for the combined thickness of your materials. Always check the grip range listed on the packaging before you buy your supplies.
Frequently Asked Questions About how to use a rivet tool
How do I know which rivet size to choose?
Always look at the “grip range” on the box. This tells you the minimum and maximum thickness of the materials the rivet can effectively join together.
Can I remove a rivet if I make a mistake?
Yes. You can easily remove a misplaced rivet by using a drill bit slightly smaller than the rivet body to drill out the center of the head. Once the head falls off, the rest of the body will push right through.
Do I need an air-powered rivet gun?
For most DIY projects, no. Hand tools are perfectly fine. Only consider an air or battery-powered tool if you are installing hundreds of rivets in a single day, as it will save your hand muscles from fatigue.
What happens if the mandrel doesn’t snap off?
This usually means you have reached the limit of the tool’s travel. Release the handle, push the tool further onto the mandrel, and squeeze again to finish the stroke.
Final thoughts for the workshop
Mastering the rivet gun is a rite of passage for any garage tinkerer. It opens up a world of possibilities for custom fabrication, allowing you to build structures that are both durable and professional-looking.
Don’t be afraid to practice on some scrap metal before tackling your main project. Once you get a feel for the tension required, you will find that it is one of the most satisfying tools in your kit. Keep your workspace organized, stay safe, and enjoy the process of turning raw materials into finished, functional gear.
