Rivets are designed to be permanent, which makes them fantastic for construction but a total nightmare when you need to take things apart. Whether you are fixing a loose gutter, repairing a boat, or working on sheet metal, removing these fasteners requires a bit of finesse.
While the strength of a rivet is its best quality, it also means you can’t simply unscrew it. If you don’t have the right technique, you risk damaging the surrounding material or enlarging the hole, making replacement difficult.
In this guide, we will walk you through how to remove rivets with a drill bit efficiently. We’ll cover why they fail, the exact tools you need, and a step-by-step process to get them out without a headache.
Key Takeaways
- Select a drill bit that matches the size of the rivet shank, not the head.
- Use a center punch to create a divot so the drill bit doesn’t wander.
- Drill at a low speed with steady pressure to separate the head from the shaft.
- If the rivet spins, hold the flange with pliers or use masking tape to create friction.
Why Do Rivets Break?
Even though rivets are meant to last forever, they aren’t invincible. In most cases, failure comes down to low-quality metal or improper installation. If a rivet wasn’t seated correctly during the initial install, moisture can get in and cause rust, or vibration can eventually snap the head off.
Installation errors are common. If the installer applied too much pressure, the metal stress could cause it to shear later. Conversely, not applying enough pressure leaves the rivet loose, leading to rattling and eventual fatigue. When a rivet fails, your only option is to drill it out and replace it.
What You Need
To remove a rivet cleanly without destroying the metal sheet behind it, you need the right setup. Here is the essential toolkit for the job:
- Drill: A cordless drill is best for mobility, especially if you are on a ladder.
- Drill Bits: Cobalt or High-Speed Steel (HSS) bits work best. Titanium is also a good option for heat resistance.
- Center Punch: This is crucial for keeping your drill bit centered on the rivet head.
- Hammer & Chisel: Useful for knocking off the rivet head after drilling.
- Pliers: Needle-nose pliers help remove the leftover shank or hold a spinning rivet.
- Safety Gear: Always wear safety goggles; metal shavings will fly.
How To Remove Rivets with a Drill Bit
1. Prep and Locate
Before you start drilling, inspect the area. If one rivet has failed, check the surrounding ones for signs of looseness or corrosion. If you are removing a gutter or a specific panel, you will likely need to take out a whole row.
Clean off any dirt, rust, or paint covering the rivet head. You need a clear view of the center indentation (the mandrel hole) to drill accurately.
2. Size Your Drill Bit
Selecting the right size is the most critical step. You want a drill bit that matches the diameter of the rivet’s shaft (shank), not the wide head.
- Too small: You will drill a hole through the center but the head won’t pop off.
- Too big: You will eat away the surrounding material and enlarge the hole, making it hard to install a replacement.
For most standard pop rivets, a 1/8-inch (0.125 inch) bit is the sweet spot. If you aren’t sure, start smaller; you can always step up to a larger bit.
3. Punch and Drill
If the rivet still has the steel pin (mandrel) stuck in the center, try to knock it through with a punch and hammer first. If the center is solid, use your center punch to make a divot right in the middle of the head. This prevents the drill bit from “walking” across the metal surface.
Secure your position. If you are on a ladder, ensure it is stable. Place the drill bit tip into the center divot. Apply steady, firm pressure and pull the trigger gently. Do not go full speed immediately.
4. Remove the Head
Drill straight until the bit cuts through the connection between the head and the shaft. You should see the rivet head start to spin or climb up the drill bit. Stop drilling immediately once the head separates.
If the head is loose but stuck, use a cold chisel or an old flathead screwdriver to pop it off.
5. Clear the Hole
Once the head is gone, the rest of the rivet (the shank) should be stuck in the hole. Use your punch and hammer to tap it out the back. If it’s stubborn, use pliers to pull it free.
6. Replace the Fastener
Now that the hole is clear, you can reattach your materials. If you are working on gutters, screwdriver friendly gutter screws are a popular upgrade because they are easier to remove in the future. If you want to keep the original look, simply install a new pop rivet using a rivet gun.
Top Tips for Removing Rivets
Use Hand Tools for Soft Rivets
If you are dealing with soft aluminum rivets and don’t have a drill, you can shear them off manually. Place the sharp edge of a cold chisel against the lip of the rivet head. Strike it firmly with a hammer until the head slices off, then punch the rest of the shaft through the hole.
Remember
Use a Grinder for Speed
If you have a lot of rivets to remove and you don’t care about the surface finish (or plan to patch it), an angle grinder is the fastest method. Grind the heads off in seconds, then punch out the shafts. This is aggressive but effective for demolition work.
Hand-Turn to Start
Before pulling the trigger, turn the drill chuck by hand a few times while pressing the bit against the rivet. This bites the metal slightly and helps establish a pilot point, giving you better precision when you apply power.
Dealing with Curved Heads
Round-head or brazier-head rivets are slippery. The drill bit loves to slide off them. Use a coarse file to flatten the top of the rivet head first. This creates a flat platform for your center punch and drill bit, ensuring you stay on target.
Remove Paint First
Thick layers of paint can hide the exact center of the rivet. Sanding the paint off reveals the “bullseye” of the rivet, making it much easier to center your drill bit. It also prevents paint from tearing in jagged strips when the rivet head pops off.
FAQs
What Is the Best Drill Bit for Drilling Out Rivets?
Cobalt bits are the superior choice, especially for steel or stainless steel rivets, because they are harder and handle heat better than standard bits. High-Speed Steel (HSS) bits are sufficient for aluminum rivets. Avoid standard wood bits or black oxide bits as they may dull quickly against metal fasteners.
Is There a Specific Tool for Removing Rivets?
Yes, there are specialized rivet removal tools that attach to your drill. These tools feature guides and depth stops that ensure you drill out the rivet head perfectly centered without damaging the hole or the sheet metal. They are excellent if you have hundreds of rivets to remove, but a standard drill bit works fine for small jobs.
What if the Rivet Spins While I Drill?
This is a common frustration. If the rivet spins, the drill bit won’t cut. Try angling the drill slightly to catch an edge, or hold the flange of the rivet head with needle-nose pliers. Alternatively, place a piece of duct tape over the rivet head before drilling; the friction often keeps it stationary enough for the bit to bite.
Can I Reuse a Rivet After Removing It?
No, rivets are single-use fasteners. The removal process destroys the head and the mandrel, rendering the rivet useless. You must replace it with a new rivet, a bolt, or a screw.
