How To Get A Broken Drill Bit Out Of Metal – Expert Techniques

It’s happened to the best of us. You’re drilling along, making good progress on a metal project, and then – snap! – your drill bit breaks, leaving a jagged piece lodged stubbornly in your workpiece. Frustration sets in, and you might even feel a little panic. Is your project ruined? Do you have to start over?

Don’t sweat it. This common workshop mishap doesn’t have to be a project-ender. As a seasoned DIYer and someone who’s faced this very challenge more times than I care to admit, I can tell you there are reliable methods to extract that stubborn shard.

In this comprehensive guide, we’ll walk through exactly how to get a broken drill bit out of metal, from simple fixes for protruding bits to more advanced techniques for those tricky, flush breaks. We’ll cover the tools you’ll need, step-by-step instructions, and crucial safety precautions to keep you and your project intact. By the end, you’ll have the confidence and knowledge to tackle this problem like a pro and get back to making sawdust or grinding sparks.

Safety First: Essential Precautions When Dealing with Broken Bits

Before you even think about grabbing a tool, it’s paramount to prioritize safety. Dealing with broken metal and sharp tools requires a careful approach. Skipping these steps can lead to serious injury or damage to your workpiece.

Always wear appropriate personal protective equipment (PPE).

• Eye Protection: Safety glasses or goggles are non-negotiable. Metal shards can fly unexpectedly.
• Hand Protection: Sturdy work gloves will protect your hands from sharp edges and hot metal.
• Hearing Protection: If you’re using power tools like angle grinders or rotary tools, earplugs or earmuffs are essential.

Secure your workpiece firmly.

A loose piece of metal can shift, causing tools to slip and leading to injury. Use a robust vise, clamps, or a drill press table to hold your material steady.

Disconnect power tools when changing bits or making adjustments.

This prevents accidental starts. Always verify the tool is unplugged before touching the chuck or cutting accessories.

Understanding the Enemy: Why Drill Bits Break and Where They Lodge

Knowing why a bit breaks can help prevent future incidents. It also helps you assess the difficulty of extraction.

Common Causes of Drill Bit Breakage

Several factors contribute to a drill bit snapping.

• Excessive Pressure: Pushing too hard, especially with smaller bits, can cause them to flex and break.
• Incorrect Speed: Drilling too fast generates excessive heat, softening the bit. Drilling too slow can cause it to bind.
• Lack of Lubrication: Metal drilling creates friction and heat. Without cutting fluid, bits overheat and weaken.
• Dull or Damaged Bits: A worn-out or chipped bit is more prone to breaking under stress.
• Workpiece Movement: If the metal shifts during drilling, the bit can bind and snap.
• Side Loading: Wiggling the drill or applying pressure at an angle puts undue stress on the bit.

Types of Broken Bit Situations

The extraction method depends heavily on how the bit broke.

• Protruding Bit: A portion of the bit sticks out from the metal surface. This is generally the easiest to remove.
• Flush Bit: The broken surface of the bit is level with the metal surface. This requires more precision.
• Recessed Bit: The broken bit is below the metal surface, often deep within the hole. This is the most challenging scenario.

Initial Assessment: Your First Steps to Remove a Broken Drill Bit

Before committing to any method, take a moment to evaluate the situation.

Carefully inspect the broken bit.

Is it sticking out? Is it flush? How large is the broken piece? A larger, more visible piece might be easier to grip.

Clear away any metal shavings or debris.

Use a shop vacuum or compressed air (with eye protection!) to ensure a clear view of the broken bit.

Apply penetrating oil.

A good penetrating oil like WD-40 Specialist Penetrant or PB Blaster can work wonders. Apply it generously around the broken bit and let it soak for 15-30 minutes. This helps loosen any corrosion or binding that might be holding the bit in place.

Method 1: The Easy Way Out – When the Bit is Protruding

If you’re lucky, a piece of the bit will be sticking out. This is your best-case scenario for extraction.

Gripping and Twisting with Pliers or Vise Grips

This is the simplest and often most effective first attempt.

1. Grip Firmly: Use a pair of locking pliers (Vise Grips) or strong needle-nose pliers. Clamp down as tightly as possible on the exposed portion of the drill bit.
2. Twist and Pull: Apply firm, steady rotational force. Try twisting in both directions – clockwise and counter-clockwise. Sometimes, a slight wiggling motion while pulling can help.
3. Be Patient: Don’t yank or use excessive force, which could break the bit further or damage your workpiece. Work it gently.

Using a Punch and Hammer (If Slightly Protruding)

If the bit is too short to grip well but still slightly above the surface, you might try this.

1. Select a Punch: Choose a center punch or a small pin punch with a tip slightly smaller than the bit’s diameter.
2. Position the Punch: Place the tip of the punch against the side of the protruding bit, near the metal surface.
3. Tap Gently: Lightly tap the punch with a small hammer, aiming to rotate the bit counter-clockwise. This can sometimes “walk” the bit out of the hole.

Effective Strategies: How to Get a Broken Drill Bit Out of Metal When It’s Stuck Deep

When the bit is flush or recessed, you need more specialized tools and techniques. This is where your problem-solving skills really come into play.

Method 2: Using a Screw Extractor (The Go-To Solution)

Screw extractors, often called “easy-outs,” are designed for removing broken fasteners, and they work brilliantly for broken drill bits too.

1. Prepare the Hole: If the bit is flush, you’ll need to create a small pilot hole in the center of the broken bit. Use a center punch to create a divot, then drill a small pilot hole using a drill bit smaller than the broken one and made of a harder material (e.g., a carbide-tipped masonry bit or a cobalt bit if the broken bit is HSS). Be extremely careful not to drill off-center.
2. Select the Right Extractor: Screw extractor sets come in various sizes. Choose one that’s slightly smaller than the pilot hole you just drilled.
3. Insert the Extractor: Insert the extractor into the pilot hole. Most extractors have a tapered, reverse-threaded design.
4. Turn Counter-Clockwise: Use a tap wrench or an adjustable wrench to slowly turn the extractor counter-clockwise. As you turn, the extractor’s threads will bite into the broken drill bit.
5. Extract the Bit: Continue turning. The extractor will wedge itself into the broken bit and, with steady pressure, should start to unthread and lift it out. Apply more penetrating oil if it feels stuck.

Method 3: Drilling Around the Broken Bit (Advanced Technique)

This method is for when screw extractors fail or aren’t suitable. It requires precision and a steady hand.

1. Choose a Larger Drill Bit: Select a drill bit that is slightly larger in diameter than the original hole you were drilling. This new bit should have a very sharp point.
2. Create a Pilot: If possible, use a small punch to create a slight indentation next to the broken bit’s edge, not on its center.
3. Carefully Drill: Place the tip of the larger drill bit just outside the circumference of the broken bit. Using a drill press is highly recommended for stability and control. Start drilling very slowly, trying to create a crescent-shaped cut around the broken piece.
4. Work Your Way Around: Gradually work your way around the broken bit, creating a larger hole that encompasses it. The goal is to weaken the material holding the broken bit so it can be pried out.
5. Remove the Bit: Once enough material is removed, the broken bit should become loose. You can then use pliers or a pick to remove it. You may need to clean up the hole afterward with a reamer or a slightly larger drill bit.

Method 4: Using a Carbide Bur and Rotary Tool (Precision Grinding)

A rotary tool (like a Dremel) with a carbide bur can be very effective for flush or recessed bits, especially in softer metals or when you need to be precise.

1. Select a Carbide Bur: Choose a small, sharp carbide bur suitable for metal. A pointed or cylindrical shape often works well.
2. Grind Away Material: With your safety glasses on, carefully grind away the broken drill bit. You can try to grind a slot for a flathead screwdriver, or simply grind the bit down until it’s gone or loose enough to remove.
3. Cool Periodically: Grinding generates heat. Take breaks to let the metal cool, and consider using a cutting fluid or water mist to keep temperatures down.
4. Pry Out or Continue Grinding: Once the bit is significantly reduced or loosened, you might be able to pry it out with a pick. Otherwise, continue grinding until it’s completely removed or integrated into the surrounding material if aesthetics aren’t critical.

Method 5: The Welding Method (Pro-Level, High Risk)

This is an advanced technique best left to experienced welders and should only be considered as a last resort. It’s particularly useful for larger broken bits.

1. Prepare the Area: Ensure the workpiece is clean and secure.
2. Weld a Nut or Rod: Using a MIG or TIG welder, carefully weld a nut or a steel rod directly onto the top of the broken drill bit. The heat from the weld can also help loosen the bit.
3. Cool and Twist: Let the weld cool completely. Then, use a wrench on the welded nut or pliers on the rod to slowly twist the broken bit counter-clockwise.

WARNING: This method carries a significant risk of damaging your workpiece, especially if it’s thin or made of a delicate material. It also produces fumes and spatter, requiring full welding PPE.

Preventing Future Breakages: Best Practices for Drilling Metal

An ounce of prevention is worth a pound of cure, especially when it comes to avoiding another broken bit.

Proper Bit Selection

Always use the right drill bit for the job.

• High-Speed Steel (HSS): Good for general-purpose drilling in softer metals like aluminum or brass.
• Cobalt (HSS-Co): Contains cobalt for increased heat resistance and hardness, ideal for stainless steel and other tough alloys.
• Carbide-Tipped: Extremely hard, best for very hard or abrasive materials. Often used in masonry bits, but also available for metal.
• Black Oxide Coating: Reduces friction and increases durability.
• Titanium Nitride (TiN) Coating: A hard ceramic material that extends bit life and reduces friction.

Correct Drilling Speed and Pressure

Match your drill speed to the material and bit size.

• Slower Speeds for Harder Metals/Larger Bits: Harder materials and larger diameter bits require slower RPMs to prevent overheating and binding.
• Faster Speeds for Softer Metals/Smaller Bits: Softer materials and smaller bits can handle higher speeds, but still avoid excessive heat.
• Steady, Even Pressure: Apply consistent, moderate pressure. Let the drill bit do the work. Avoid forcing it, especially when the bit is nearing the breakthrough point.

Lubrication is Key

Always use a cutting fluid or lubricant when drilling metal.

This reduces friction and heat, prolonging bit life and improving cutting performance. For general steel, a cutting oil works well. For aluminum, kerosene or denatured alcohol can be effective. Cast iron usually drills dry.

Secure the Workpiece

Ensure your material is clamped firmly to your workbench or drill press table.

Any movement can cause the bit to bind and snap. A secure setup also improves accuracy and safety.

Frequently Asked Questions About How to Get a Broken Drill Bit Out of Metal

How do I get a broken drill bit out of hardened steel?

Removing a broken bit from hardened steel is very challenging. Your best options are using a high-quality screw extractor with a pilot hole drilled by a carbide-tipped bit, or a carbide bur with a rotary tool for precise grinding. The welding method can also work for larger bits if you have the expertise.

Can I just drill through a broken drill bit?

Generally, no. Drill bits are made of hardened steel, and you typically cannot drill through one with another standard drill bit. You would need a bit made of a significantly harder material, like a diamond-tipped core drill or specialized carbide bits, which are usually not practical for this task. The “drilling around” method is about removing the surrounding material, not drilling through the broken piece.

What if the screw extractor breaks inside the hole?

If a screw extractor breaks, you’re in a tougher spot as extractors are extremely hard. You might need to use a carbide bur to grind it out, or in extreme cases, take the piece to a professional machinist or welder who can use EDM (electrical discharge machining) or specialized welding techniques to remove it.

Is it always necessary to use penetrating oil?

While not strictly “necessary” in every single case, applying penetrating oil is highly recommended. It significantly increases your chances of success by lubricating the broken bit and helping to break down any rust or corrosion that might be binding it in the hole.

When should I just give up and get a professional?

Know your limits. If you’ve tried several methods, are risking further damage to your valuable workpiece, or feel unsafe, it’s time to consider a professional. A machinist or a specialized repair shop often has tools and expertise for challenging extractions that are beyond the scope of a typical home workshop.

Conclusion: Don’t Let a Broken Bit Break Your Spirit

Dealing with a broken drill bit in metal can be a real headache, but as you’ve seen, it’s a solvable problem. With the right tools, a bit of patience, and a commitment to safety, you can successfully extract that stubborn piece and get your project back on track. Remember, starting with the least invasive methods and escalating only when necessary is always the best approach.

Keep these techniques in your DIY arsenal, and you’ll be ready for whatever challenges your next metalworking project throws your way. Stay safe in your shop, keep those bits sharp, and happy tinkering!

• Author
• Recent Posts

Jim Boslice

Jim Boslice is a power tool enthusiast who tests, reviews, and shares practical guides to help DIYers and professionals choose the right tools for every project.

Latest posts by Jim Boslice (see all)

• Types Of Plasma Cutters – Choose The Right Tool For Your Metalworking - May 8, 2026
• Can Plasma Cutters Cut Stainless Steel – ? Your Guide To A Versatile - May 8, 2026
• Can You Drill And Tap Jb Weld – A Diyer’S Guide To Fastening On - May 8, 2026