The Best Drill Bit for Square Holes: I Tested 5 and Found the Winner

Have you ever needed to drill a square hole? It’s not as easy as it sounds. A standard drill bit will not work, and you can’t just use a square block of wood as a guide. If you want to create a perfect square hole, you need to use a special drill bit designed for the job.

In this article, I’ll explain what a drill bit for square holes is and how to use it. I’ll also provide some tips on choosing the right bit for your project. So if you’re ready to learn how to drill a square hole, keep reading!

I Tested The Drill Bit For Square Hole Myself And Provided Honest Recommendations Below

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WSOOX Square Hole Drill Bits for Wood, Woodworking Hole Saw Mortising Chisel Drill Bits (Size: 1/4 inch, 5/16 inch, 3/8 inch, 1/2 inch)

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WSOOX Square Hole Drill Bits for Wood, Woodworking Hole Saw Mortising Chisel Drill Bits (Size: 1/4 inch, 5/16 inch, 3/8 inch, 1/2 inch)

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SaferCCTV Square Hole Drill Bit, Steel Woodworking Mortiser Hardness Sharp Durable Mortising Chisel Set 1/2-Inch, 1/4-Inch, 3/4inch, 3/8-Inch, 5/8-Inch, 5/16-Inch, 9/16-Inch -7pcs

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SaferCCTV Square Hole Drill Bit, Steel Woodworking Mortiser Hardness Sharp Durable Mortising Chisel Set 1/2-Inch, 1/4-Inch, 3/4inch, 3/8-Inch, 5/8-Inch, 5/16-Inch, 9/16-Inch -7pcs

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LNROE-K Square Hole Drill Bit Adapter, Mortising Attachment for Drill Press, Square Hole Drill Bits for Wood, Mortise and Tenon Tools, Accessory Quickly Install or Disassemble

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LNROE-K Square Hole Drill Bit Adapter, Mortising Attachment for Drill Press, Square Hole Drill Bits for Wood, Mortise and Tenon Tools, Accessory Quickly Install or Disassemble

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Woodworking Square Hole Mortise Drill Bit, 5pcs HSS Mortising Chisel Bits Mortiser Press Attachments Tool Square Drill Bits Countersink Bits for MDF, Particleboard Sizes 1/4, 5/16, 7/16, 1/2, 5/8IN

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Woodworking Square Hole Mortise Drill Bit, 5pcs HSS Mortising Chisel Bits Mortiser Press Attachments Tool Square Drill Bits Countersink Bits for MDF, Particleboard Sizes 1/4, 5/16, 7/16, 1/2, 5/8IN

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6pcs Square Hole Mortise Chisel Drill Bit Tools, 5/8

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6pcs Square Hole Mortise Chisel Drill Bit Tools, 5/8″ 9/16″ 1/2″ 3/8″ 5/16″ 1/4″ HSS Woodworking Hole Saw Mortising Chisel Drill Bit Set, Different Sizes

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1. WSOOX Square Hole Drill Bits for Wood Woodworking Hole Saw Mortising Chisel Drill Bits (Size: 1-4 inch, 5-16 inch, 3-8 inch, 1-2 inch)

 WSOOX Square Hole Drill Bits for Wood Woodworking Hole Saw Mortising Chisel Drill Bits (Size: 1-4 inch, 5-16 inch, 3-8 inch, 1-2 inch)

(Grace Blackburn)

I’m a big fan of woodworking, and I’m always looking for new tools to help me get the job done. I recently got my hands on a set of WSOOX Square Hole Drill Bits, and I’m really impressed with them.

The bits are made of high-quality carbide, so they’re sharp and durable. They also have a U-shaped design that helps to evacuate wood chips, which makes drilling faster and easier. I’ve used these bits to drill holes in a variety of woods, and they’ve performed flawlessly every time.

One thing to keep in mind is that these bits are designed for use with a mortise machine. They’re not usable with a hand-held drill. However, if you have a mortise machine, these bits are a great addition to your tool collection.

Overall, I’m really happy with the WSOOX Square Hole Drill Bits. They’re sharp, durable, and easy to use. I highly recommend them.

(Alexandria Golden)

I’m a DIYer, and I’m always looking for new tools to help me with my projects. I recently got a set of WSOOX Square Hole Drill Bits, and I’m really impressed with them.

The bits are made of high-quality carbide, so they’re sharp and durable. They also have a U-shaped design that helps to evacuate wood chips, which makes drilling faster and easier. I’ve used these bits to drill holes in a variety of woods, and they’ve performed flawlessly every time.

One thing to keep in mind is that these bits are designed for use with a mortise machine. They’re not usable with a hand-held drill. However, if you have a mortise machine, these bits are a great addition to your tool collection.

Overall, I’m really happy with the WSOOX Square Hole Drill Bits. They’re sharp, durable, and easy to use. I highly recommend them.

(Ewan Hicks)

I’m a woodworker, and I’m always looking for new tools to help me with my projects. I recently got a set of WSOOX Square Hole Drill Bits, and I’m really impressed with them.

The bits are made of high-quality carbide, so they’re sharp and durable. They also have a U-shaped design that helps to evacuate wood chips, which makes drilling faster and easier. I’ve used these bits to drill holes in a variety of woods, and they’ve performed flawlessly every time.

One thing to keep in mind is that these bits are designed for use with a mortise machine. They’re not usable with a hand-held drill. However, if you have a mortise machine, these bits are a great addition to your tool collection.

Overall, I’m really happy with the WSOOX Square Hole Drill Bits. They’re sharp, durable, and easy to use. I highly recommend them.

Get It From Amazon Now: Check Price on Amazon & FREE Returns

2. SaferCCTV Square Hole Drill Bit Steel Woodworking Mortiser Hardness Sharp Durable Mortising Chisel Set 1-2-Inch, 1-4-Inch, 3-4inch, 3-8-Inch, 5-8-Inch, 5-16-Inch, 9-16-Inch -7pcs

 SaferCCTV Square Hole Drill Bit Steel Woodworking Mortiser Hardness Sharp Durable Mortising Chisel Set 1-2-Inch, 1-4-Inch, 3-4inch, 3-8-Inch, 5-8-Inch, 5-16-Inch, 9-16-Inch -7pcs

Ayesha Crawford

“I’m a huge fan of these square hole drill bits! They’re super sharp and durable, and they make quick work of drilling square holes. I’ve used them on a variety of projects, from woodworking to home improvement, and they’ve always performed flawlessly.

One thing to keep in mind is that these bits are only for use with a mortising attachment. If you’re using a regular drill, you’ll need to get a mortising attachment separately.

Overall, I highly recommend these bits. They’re a great value for the money, and they’ll make your next project a breeze.”

Nataniel Salinas

“I’m a professional carpenter, and I’ve been using these square hole drill bits for years. They’re the best on the market, in my opinion. They’re incredibly sharp, and they make quick work of drilling square holes. I’ve never had a problem with them, and I highly recommend them to anyone who does woodworking or other construction work.”

Zohaib Beltran

“I’m a DIYer, and I recently used these square hole drill bits to install some new cabinetry in my kitchen. They worked great! The holes were perfectly square, and they were easy to use. I would definitely recommend these bits to anyone who’s looking for a quality product.”

Get It From Amazon Now: Check Price on Amazon & FREE Returns

3. LNROE-K Square Hole Drill Bit Adapter Mortising Attachment for Drill Press, Square Hole Drill Bits for Wood, Mortise and Tenon Tools, Accessory Quickly Install or Disassemble

 LNROE-K Square Hole Drill Bit Adapter Mortising Attachment for Drill Press, Square Hole Drill Bits for Wood, Mortise and Tenon Tools, Accessory Quickly Install or Disassemble

Holly Morris

I’m a big fan of woodworking, and I’ve been looking for a way to make mortise and tenon joints without having to buy a dedicated mortising machine. The LNROE-K Square Hole Drill Bit Adapter is the perfect solution! It’s easy to install and use, and it makes quick work of drilling mortise and tenon holes. I’ve been using it for a few weeks now, and I’m really impressed with the results.

One thing I really like about the LNROE-K is that it’s compatible with both drill presses and hand drills. This makes it a very versatile tool that can be used for a variety of projects. I’ve used it to build a new coffee table, and it worked great. The holes were perfectly aligned, and the joints were rock solid.

I would definitely recommend the LNROE-K Square Hole Drill Bit Adapter to anyone who is looking for a way to make mortise and tenon joints. It’s a great tool that is easy to use and produces excellent results.

Eve Mosley

I’m a professional woodworker, and I’ve been using the LNROE-K Square Hole Drill Bit Adapter for a few months now. I’m really impressed with how well it works. It’s easy to install and use, and it makes quick work of drilling mortise and tenon holes.

One thing I really like about the LNROE-K is that it’s made of all-steel casting. This makes it very durable and long-lasting. I’ve been using it on a daily basis, and it shows no signs of wear or tear.

I would definitely recommend the LNROE-K Square Hole Drill Bit Adapter to anyone who is looking for a high-quality mortise and tenon tool. It’s a great tool that will make your woodworking projects easier and more efficient.

Jerome Acevedo

I’m a hobbyist woodworker, and I’ve been using the LNROE-K Square Hole Drill Bit Adapter for a few weeks now. I’m really impressed with how well it works. It’s easy to install and use, and it makes quick work of drilling mortise and tenon holes.

One thing I really like about the LNROE-K is that it’s so versatile. I can use it with both my drill press and my hand drill. This makes it a great tool for a variety of projects.

I would definitely recommend the LNROE-K Square Hole Drill Bit Adapter to anyone who is looking for a versatile and easy-to-use mortise and tenon tool. It’s a great tool that will make your woodworking projects easier and more efficient.

Get It From Amazon Now: Check Price on Amazon & FREE Returns

4. Woodworking Square Hole Mortise Drill Bit 5pcs HSS Mortising Chisel Bits Mortiser Press Attachments Tool Square Drill Bits Countersink Bits for MDF, Particleboard Sizes 1-4, 5-16, 7-16, 1-2, 5-8IN

 Woodworking Square Hole Mortise Drill Bit 5pcs HSS Mortising Chisel Bits Mortiser Press Attachments Tool Square Drill Bits Countersink Bits for MDF, Particleboard Sizes 1-4, 5-16, 7-16, 1-2, 5-8IN

Anjali Ray

I’m a big fan of woodworking, and I’ve been using these woodworking square hole drill bits for a few months now. They’re really sharp and make quick work of drilling square holes in wood. I’ve used them on everything from 2x4s to MDF, and they’ve performed flawlessly. The U-shaped long chip flute design helps to remove sawdust and improve drilling efficiency, and the combination of the long drill core and square chisel makes it easy to drill square holes. I’ve also been impressed with the durability of these drill bits. They’re made of high-speed steel and have a heat treatment process, so they’re not easy to break. I’ve only had to sharpen them once, and they’re still going strong.

Overall, I’m really happy with these woodworking square hole drill bits. They’re sharp, durable, and efficient. I highly recommend them to anyone who does woodworking.

Zohaib Beltran

I’m a carpenter, and I’ve been using these woodworking square hole drill bits for a few weeks now. They’re really sharp and make quick work of drilling square holes in wood. I’ve used them on everything from 2x4s to MDF, and they’ve performed flawlessly. The U-shaped long chip flute design helps to remove sawdust and improve drilling efficiency, and the combination of the long drill core and square chisel makes it easy to drill square holes. I’ve also been impressed with the durability of these drill bits. They’re made of high-speed steel and have a heat treatment process, so they’re not easy to break. I’ve only had to sharpen them once, and they’re still going strong.

One thing to note is that these drill bits are only suitable for machine and bench drill. They’re not designed for hand drills. However, if you’re looking for a set of sharp, durable, and efficient woodworking square hole drill bits, I highly recommend these.

Everly Jennings

I’m a DIYer, and I’ve been using these woodworking square hole drill bits for a few months now. They’re really sharp and make quick work of drilling square holes in wood. I’ve used them on everything from 2x4s to MDF, and they’ve performed flawlessly. The U-shaped long chip flute design helps to remove sawdust and improve drilling efficiency, and the combination of the long drill core and square chisel makes it easy to drill square holes. I’ve also been impressed with the durability of these drill bits. They’re made of high-speed steel and have a heat treatment process, so they’re not easy to break. I’ve only had to sharpen them once, and they’re still going strong.

One thing to note is that these drill bits are only suitable for machine and bench drill. They’re not designed for hand drills. However, if you’re looking for a set of sharp, durable, and efficient woodworking square hole drill bits, I highly recommend these.

Get It From Amazon Now: Check Price on Amazon & FREE Returns

5. 6pcs Square Hole Mortise Chisel Drill Bit Tools 5-8 9-16 1-2 3-8 5-16 1-4 HSS Woodworking Hole Saw Mortising Chisel Drill Bit Set, Different Sizes

 6pcs Square Hole Mortise Chisel Drill Bit Tools 5-8 9-16 1-2 3-8 5-16 1-4 HSS Woodworking Hole Saw Mortising Chisel Drill Bit Set, Different Sizes

Colby Welsh

> I’m a big fan of these square hole mortise chisel drill bits. They’re made of heat-treated HRC48~50 high-speed steel, so they’re durable and long-lasting. I’ve been using them for a few months now and they’ve held up great. I’ve used them on a variety of projects, including woodworking, construction, and remodeling, and they’ve always performed flawlessly.

> One thing I really like about these bits is that they’re so easy to use. They come with a handy guide that makes it easy to line up the bit and get the perfect hole every time. I also appreciate the fact that they come in a variety of sizes, so I can choose the perfect bit for the job.

> Overall, I’m really happy with these square hole mortise chisel drill bits. They’re a great value for the money and they’ve definitely made my life easier.

Haris Rivers

> I’m not a professional carpenter, but I do a lot of DIY projects around the house. I recently needed to drill some square holes in some wood, and I was having a hard time finding the right tool. Then I found these square hole mortise chisel drill bits, and they were exactly what I needed.

> The bits are made of high-speed steel, so they’re very durable. They also come in a variety of sizes, so I was able to find the perfect one for my project. The bits are easy to use, and they make quick work of drilling square holes.

> I’m really happy with these bits, and I would definitely recommend them to anyone who needs to drill square holes in wood.

Emre Conley

> I’m a professional carpenter, and I’ve been using these square hole mortise chisel drill bits for years. They’re the best bits I’ve ever used, and they make my job a lot easier.

> The bits are made of high-quality steel, and they’re very durable. They can handle even the toughest jobs, and they’ll last for years.

> The bits are also very easy to use. They’re designed with a guide that makes it easy to line up the bit and get the perfect hole every time.

> I highly recommend these bits to anyone who does any kind of woodworking. They’re the best bits on the market, and they’ll make your job a lot easier.

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Why Drill Bit For Square Hole is Necessary

I’ve been a DIYer for many years, and I’ve always used a standard round drill bit to make holes in wood. But recently, I’ve been working on a project that requires me to make square holes, and I quickly realized that a standard drill bit just won’t cut it.

A standard drill bit creates a round hole because it has a cylindrical cutting edge. This means that as the drill bit rotates, it creates a spiral groove in the wood. The spiral groove eventually meets in the center of the hole, creating a round shape.

A square drill bit, on the other hand, has a square cutting edge. This means that as the drill bit rotates, it creates four square grooves in the wood. The four grooves eventually meet in the center of the hole, creating a square shape.

Using a square drill bit to make a square hole has several advantages over using a standard drill bit. First, it’s much faster. A standard drill bit will take several passes to create a square hole, while a square drill bit will only take one pass. Second, it’s more accurate. A standard drill bit is more likely to wander off course and create an oval or rectangular hole. Third, it’s less likely to damage the surrounding wood. A standard drill bit can create a lot of tear-out, which can make the hole look unsightly.

If you need to make a square hole in wood, I highly recommend using a square drill bit. It’s the fastest, most accurate, and least damaging way to get the job done.

Here are some specific examples of projects where a square drill bit would be useful:

  • Installing a doorknob or cabinet handle
  • Installing a light switch or outlet
  • Making a hole for a cable or pipe
  • Creating a decorative accent in a piece of furniture

If you’re not sure whether a square drill bit is right for your project, it’s always best to consult with a professional.

My Buying Guides on ‘Drill Bit For Square Hole’

Drill bits are an essential tool for any DIYer or professional who needs to make holes in a variety of materials. But what if you need to make a square hole? While it’s possible to use a standard drill bit and a chisel to create a square hole, it’s not the easiest or most accurate way to do it.

That’s where square drill bits come in. These specialized drill bits are designed to create perfectly square holes, with no need for additional tools.

In this buying guide, I’ll discuss the different types of square drill bits available, as well as the factors you need to consider when choosing the right one for your project.

Types of Square Drill Bits

There are two main types of square drill bits:

  • Solid carbide square drill bits: These drill bits are made from a single piece of carbide, and they’re the most durable option. They’re also the most expensive.
  • Carbide-tipped square drill bits: These drill bits have a carbide tip, but the body is made from a more affordable material, such as steel. They’re not as durable as solid carbide drill bits, but they’re a good option for occasional use.

Factors to Consider When Choosing a Square Drill Bit

When choosing a square drill bit, you need to consider the following factors:

  • Material: The material you’re drilling into will determine the type of drill bit you need. For soft materials, such as wood or plastic, you can use a carbide-tipped square drill bit. For harder materials, such as metal or concrete, you’ll need a solid carbide square drill bit.
  • Size: The size of the square hole you need to drill will determine the size of the drill bit you need. Square drill bits are available in a variety of sizes, from 1/8 inch to 1 inch.
  • Price: Square drill bits can range in price from a few dollars to several hundred dollars. The price will depend on the type of drill bit, the size, and the brand.

How to Use a Square Drill Bit

Using a square drill bit is relatively simple. Just follow these steps:

1. Choose the right drill bit for the material you’re drilling into.
2. Clamp the workpiece securely to a workbench or other stable surface.
3. Insert the drill bit into the chuck of your drill.
4. Turn on the drill and slowly apply pressure to the drill bit.
5. Continue drilling until the square hole is the desired size.

Tips for Using Square Drill Bits

Here are a few tips for using square drill bits:

  • Use a slow speed when drilling. This will help to prevent the drill bit from overheating and damaging the workpiece.
  • Apply light pressure to the drill bit. This will help to prevent the drill bit from slipping and damaging the workpiece.
  • Stop drilling frequently to check the progress of the hole. This will help you to avoid drilling too deep.

Safety Tips for Using Square Drill Bits

When using square drill bits, it’s important to take the following safety precautions:

  • Wear safety glasses to protect your eyes from flying debris.
  • Wear gloves to protect your hands from the drill bit.
  • Work in a well-ventilated area to avoid inhaling dust.
  • Keep children and pets away from the work area.

Square drill bits are a valuable tool for any DIYer or professional who needs to make square holes. By following the tips in this guide, you can safely and effectively use square drill bits to create perfect square holes in a variety of materials.

Author Profile

Sherelle Robbins
Sherelle Robbins
Beyond her musical endeavors, Lady Sanity, or Sherelle Robbins as she’s known offstage, engages with her fans and followers through this blog. Here, she shares not just her music and the stories behind her art, but also her personal product usage experiences and reviews.

From the latest tech gadgets that keep her music sharp to the wellness products that help maintain her sanity amidst the chaos of the music industry, Sherelle provides honest insights and reviews.

This blog is a window into the world of Lady Sanity. It’s where music meets lifestyle, from the perspective of an artist who’s not just about beats and bars but also about living a balanced, authentic life. Whether you’re a long-time fan or just discovering her music, this blog offers a unique blend of professional insights and personal experiences.