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Drilling with an Impact Driver: Yes, You Can! Here’s How
Quick Answer: Yes, you can absolutely drill with an impact driver. You just need the right drill bits—specifically, hex-shank bits. While it’s great for wood, metal, and plastic, it’s not the best choice for masonry. For most home and DIY jobs, your impact driver is a powerful and versatile drilling tool.
Have you ever stood in your garage, impact driver in hand, wondering if you really need to buy a separate drill? It’s a common question. You have this powerful tool that drives screws like a champ, so can it also make a hole?
The good news is, you’re in the right place. Not only can you drill with an impact driver, but for some jobs, it’s even better than a standard drill. We’ll show you exactly how to do it, what you need, and when it’s the perfect tool for the job. Let’s walk through everything you need to know, step by step.
What’s the Real Difference? Impact Driver vs. Drill
Before we start drilling, it helps to know why these tools are different. They look similar, but they work in unique ways.
- A Power Drill (or Drill/Driver): Think of a drill as a tool for smooth, consistent turning. It applies steady rotational force. This is perfect for creating clean, precise holes. It has a three-jaw chuck that can hold a wide variety of round or hex-shank bits.
- An Impact Driver: An impact driver adds two extra ingredients: more speed and concussive blows (or “impacts”). It spins fast, and when it feels resistance (like when a screw gets tight), it starts delivering powerful rotational taps. Think of it like using a wrench and tapping the end of it with a hammer to get extra torque. This makes it amazing for driving long screws without stripping the head.
Because of this impacting action, an impact driver makes a loud, chattering noise when it’s working hard. That’s the sound of power!
When Should You Use an Impact Driver for Drilling?
An impact driver isn’t always the right choice, but it shines in many common situations. Knowing when to grab it will save you time and effort.
Great For:
- Drilling in Wood: For general-purpose drilling in softwoods and hardwoods, an impact driver is fantastic. It powers through wood with ease.
- Large Holes with Spade Bits: If you need to drill a large hole (over 1/2 inch) in wood, the impacts help the spade bit chew through the material without getting stuck.
- Thin Sheet Metal: The high speed of an impact driver makes quick work of drilling through thin metal studs or sheet metal.
- Plastic and PVC: It drills cleanly through most plastics without an issue.
Not So Good For:
- Masonry (Brick or Concrete): An impact driver’s rotational impacts are not the same as a hammer drill’s forward-and-back hammering action. It will not effectively drill into concrete, brick, or stone. For that, you need a hammer drill.
- Precision Work: The impacts can make the bit “walk” or wander when you first start a hole. If you need a perfectly placed, super-clean hole (like in fine furniture), a standard drill offers more control.
- Very Hard or Brittle Materials: The concussive force can sometimes crack brittle materials like ceramic tile or old, hardened plastic.
The Key to Success: Using the Right Drill Bits
This is the most important part. You cannot use just any drill bit in your impact driver. Your impact driver has a special 1/4-inch hex collet, and it needs bits that fit.
You need to use impact-rated, hex-shank drill bits. The “hex shank” is the six-sided base of the bit that locks into the driver’s collet.
Why can’t you use regular, round-shank bits? They simply won’t fit. The collet on an impact driver is designed to quickly swap out bits with a 1/4-inch hex base. A standard drill’s chuck is adjustable and can clamp down on round bits.
Types of Hex-Shank Bits to Look For:
- Twist Drill Bits: These are your all-purpose bits for drilling in wood, metal, and plastic. Look for a set that is “impact-rated” for durability.
- Brad-Point Bits: These have a sharp point at the tip that prevents the bit from wandering when you start a hole. They are excellent for creating clean holes in wood.
- Spade Bits (or Paddle Bits): These are for drilling large-diameter holes in wood quickly. The power of an impact driver makes using spade bits much easier.
- Hole Saws: For very large holes, you can use a hole saw. Just make sure you get one with a hex-shank arbor (the part that holds the saw and the pilot bit).
How to Drill with an Impact Driver: A Step-by-Step Guide
Ready to make some holes? Follow these simple steps for safe and effective drilling.
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Step 1: Gear Up for Safety
Safety First! Always wear safety glasses. Drilling can send small chips of wood or metal flying. Impact drivers are also loud, so consider hearing protection for extended use.
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Step 2: Choose the Right Bit
Select an impact-rated, hex-shank drill bit that is the correct size and type for your material (wood, metal, etc.).
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Step 3: Insert the Bit Securely
To insert the bit, pull the metal collet at the end of the impact driver forward. Slide the hex shank of the bit all the way in, then release the collet. It should snap back into place. Give the bit a little tug to make sure it’s locked in and won’t fall out.
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Step 4: Mark Your Spot
Use a pencil to mark exactly where you want to drill. For metal or other hard surfaces, using a center punch to create a small dimple will prevent the bit from slipping when you start.
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Step 5: Start Slow and Steady
Place the tip of the drill bit on your mark. Squeeze the trigger on your impact driver very gently. Most drivers have a variable-speed trigger, allowing you to start slowly. This gives you maximum control and keeps the bit from “walking” away from your mark.
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Step 6: Apply Firm, Straight Pressure
Once the hole is started, apply firm, steady pressure directly in line with the bit. Don’t push too hard—let the tool do the work. Keep the driver straight and perpendicular to the surface for a clean hole.
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Step 7: Increase the Speed
With the hole established and the driver stable, you can squeeze the trigger harder to increase the speed. You may hear the impacting mechanism engage (the loud chattering sound), especially in tougher materials. This is normal!
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Step 8: Clear Debris as You Go
For deep holes, it’s a good idea to pull the bit out of the hole every so often to clear away wood chips or metal shavings. This prevents the bit from getting clogged and overheating.
Pro-Tips for Better Drilling with an Impact Driver
Want to get results like a pro? Keep these simple tips in mind.
- Create a Pilot Hole: When drilling a large hole, it’s often easier to drill a small “pilot” hole first. This guides the larger bit and gives you a much cleaner result.
- Use Cutting Fluid for Metal: When drilling into metal, adding a drop of cutting oil or 3-in-1 oil to the drill point will reduce heat, make drilling easier, and extend the life of your bit.
- Let the Impacts Work: If you feel the driver start to impact, don’t panic and push harder. Maintain steady pressure and let the tool’s power do the job. Forcing it can break the bit.
- Two Hands for Stability: For more control, especially with larger bits, use one hand on the trigger and the other to support the back of the tool.
Do You Still Need a Dedicated Drill?
So, if an impact driver can drill, should you just toss your old power drill?
For many homeowners and DIY enthusiasts, an impact driver with a good set of hex-shank bits can handle 80% or more of the drilling and driving tasks around the house. It’s an incredibly versatile tool.
However, you might still want a dedicated drill or a hammer drill if you:
- Do a lot of fine woodworking that requires ultimate precision.
- Frequently need to drill into brick, stone, or concrete (a hammer drill is essential for this).
- Own a lot of specialty round-shank drill bits that you want to keep using.
- Prefer the quieter, smoother operation of a standard drill.
For a deeper dive into the technical differences, check out this excellent guide from Pro Tool Reviews.
Frequently Asked Questions (FAQ)
1. Can I use my regular, round drill bits in an impact driver?
No, you cannot. An impact driver requires bits with a 1/4-inch hex-shaped shank to lock into its collet. Regular round bits will not fit and cannot be secured.
2. Can an impact driver drill into concrete?
No. While it is powerful, it lacks the specific forward-and-back hammering motion needed for masonry. You will have very little success and will likely burn out your bit. For concrete, brick, or block, you need a hammer drill.
3. Is an impact driver better than a drill for wood?
It depends. For driving screws or making large holes with spade bits, an impact driver is often faster and more powerful. For small, precise holes where a clean finish is critical, a standard drill offers more control and finesse.
4. Why is my impact driver so loud when drilling?
That loud, rattling noise is the internal impacting mechanism at work! It engages whenever the tool meets significant resistance. It’s a normal sound that means the tool is delivering maximum torque.
5. What is a chuck adapter for an impact driver?
A chuck adapter is an accessory with a hex shank on one end and an adjustable three-jaw chuck on the other. It allows you to use round-shank bits in your impact driver. While useful in a pinch, they can add wobble and are not as stable as using a native hex-shank bit.
6. Will drilling with an impact driver damage the tool?
Not at all. As long as you are using impact-rated bits and not trying to drill into materials like concrete, the tool is perfectly capable of handling the task. It’s designed for high-torque applications, and drilling is well within its capabilities.
7. What’s the difference between an impact driver and an impact wrench?
An impact driver has a 1/4-inch hex collet for bits and is designed for screws and small bolts. An impact wrench has a square drive (like a socket wrench) and is designed for loosening and tightening large nuts and bolts, like car lug nuts.
Conclusion: Your Versatile Drilling Partner
So, can you drill with an impact driver? The answer is a resounding yes! With the right hex-shank bits and the proper technique, your impact driver transforms from a screw-driving specialist into a capable and powerful drilling machine.
It’s perfect for most common materials like wood, plastic, and thin metal. While it won’t replace a hammer drill for concrete or a drill press for high-precision work, it more than earns its keep as one of the most useful tools in any toolbox. The next time you need to make a hole, don’t hesitate to grab your impact driver and give it a try.
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