Top 10 Best Lock Miter Router Bits You Can Buy In 2021

You’ve finally bought your new router and are ready to put it to use. However, as high-tech, as it is, it is toothless without router bits. They help you to create the most perfect joint you’ve always wanted.

The lock miter bit was initially created with box beams, posts, and other long-grain tasks in mind.

However, since the bit has such a wonderful and sturdy joint, it has been used for various purposes beyond its intended purpose. The lock miter is often called a “trick bit” in the woodworking community.

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Freud Lock Miter Bit with Shank

Freud Lock Miter Bit with Shank

Whiteside 45 Degree Lock Miter Router Bit

Whiteside 45 Degree Lock Miter Router Bit

Yonico Lock Miter Bit

Yonico Lock Miter Bit

Meihejia 45 Degree Lock Miter Router Bit

Meihejia 45 Degree Lock Miter Router Bit

ROOCBIT 45 Degree Lock Miter Router Bit

ROOCBIT 45 Degree Lock Miter Router Bit

The bit makes both parts of a mitered corner–complete with interlocking tongues and grooves–with a single router table configuration, thanks to a work of geometric creativity.

In addition to hiding end grain, the interlocking design of the joint provides a mechanical benefit by increasing the gluing area and preventing pieces from moving when fastened. When manufacturing boxes, drawers, and other casework, lock miter bits are widely utilized.

Larger constructions, such as legs and posts, may also benefit from them. Arts and Crafts furniture makers often use this piece to create legs with the quartersawn grain on all four sides. But how can you know which is the best lock miter router bit to get?

If you’ve never used a router before, the choices might be overwhelming. This comparison guide and review is the only thing you need to buy the best lock miter router bit and put that into good use! So, let’s get started!

10 Best Lock Miter Router Bit Reviews

#1. Freud Lock Miter Bit with 1/2″ Shank

Freud Lock Miter Bit

With Freud’s Lock Miter Router Bits, you can make interlocking corner joints. One board should be run vertically, and the component to be attached should be run horizontally.

It cuts plywood, hardwoods, and softwoods, as well as composite materials. CNC and other automated routers, as well as table-mounted portable routers, may all benefit from this.

This is a fantastic router-bit set that will allow you to make some stunning shaker doors. It includes enough shims to set up and develop outstanding joints.

However, it does not come with “dialed in”; you will need to change the shims on one or the other for it to operate properly. The additional money spent on this bit set will be worth it. Most bit sets restrict you to a 1/4-inch drill bit. However, you may use up to a 3/8″ drill bit with this kit.

When working on the rail ends, keep an eye out for chip out, as with any of these sorts of bits. To avoid the chip out, I suggest routing a backer that you will put behind the piece as you pass it through the router.

Highlighted Features:

  • Perma-SHIELD Coating.
  • Creates strongest interlocking joints.
  • Good for hardwood,softwood, plywood and composites.
  • Only use on CNC or tabletop routers.
  • Make thinner panels for humidors and jewelry boxes.

#2. Whiteside 45 Degree Lock Miter Router Bit

Whiteside 45 Degree Lock Miter Router Bit

Fine Woodworking Magazine consistently ranks Whiteside Machine first in cut quality and second in value. I’ve never used a bit that even comes close to Whiteside bits in manufacturing perfection, material quality, and sharp-edge durability.

Make both cuts for joining a joint in your project with this 45° Lock Miter bit. Recommended for material thicknesses ranging from 1/2″ to 3/4″.

In a youtube channel named WoodWorkers Guild of America, I discovered a very detailed instructional video covering setup and adjustment. You can follow the procedure if you’re new. I absolutely love the Whiteside bit. I found the results to be well worth the time and effort required to set up properly.

Another thing to mention is that this works excellent with BB plywood. You must use the same plywood for your setup because it’s a different thickness than 1/2″ or 3/4″ stock. Make your own setup jig and save it after you’ve got it tuned in. An instant reinstallation will be available for the next time!

Highlighted Features:

  • Constructed of premium carbide.
  • It has 1/2″ shanks.
  • Only usable in router tables.
  • Precision ground for appropriate balance at high RPM.

#3. Yonico Lock Miter Bit (15334)

Yonico Lock Miter Bit

This lock miter router bit from Yonico can connect your boards at 90 degrees using an interlocking profile. Without a battle to hold panels in place during clamping, the interlocking 45° Miter Lock cuts will generate solid joins.

Lock Miter cuts also give additional bonding area, resulting in stable and lasting joints.

In our testing, the setup was a little complex at first. To begin, you’ll need a tabletop router. Controlling the wood feed, on the other hand, is the most challenging task.

We were able to maintain everything tight by clamping our components to a ‘sacrificial’ panel (any wiggle, the bit will bite and ruin the cut). It was tuned in after some trial and error.

Make sure you have plenty of spare materials on hand. Also, after you’ve got the bit set correctly, make sure you cut all of the corners. If you change one setting, you’ll be back to square one.

Highlighted Features:

  • It attaches boards at a 90-degree angle using an interlocking profile.
  • Tungsten carbide blades with a C3 micro-grain for a sharper, longer-lasting edge.
  • Only for use with table mount routers, not for use with MDF or plywood.
  • For optimal strength and longevity, use silver induction brazing.

#4. Meihejia 45 Degree Lock Miter Router Bit

Meihejia 45 Degree Lock Miter Router Bit

This lock miter router bit is not usable in electric drills or drill machines since it’s designed for desktop engraving equipment (such as CNC handheld and table-mounted routers).

Otherwise, the shank of the lock miter router bit will flex if it is not inserted correctly and tightened. To ensure safe cutting and to avoid rip-out, use a push block.

This bit performs as promised and will save you throughout any renovation process. Basically, in our testing, this bit made it through around 40 passes through the pressboard, which is a lot tougher than wood.

We anticipated to have to purchase another bit after so many runs with such a rigid material, but nothing! It’s still as crisp as it was when we bought it!

It’s also great for beginner woodworkers. You can use a router table and this bit to create edge joins for tiny boxes and frames. However, you need a few practice runs to see how the joints should be routed to fit together correctly.

Once you master it, it’s good to go! Making a wood drawer, window, closet, or other woodworking tasks is a breeze with this kit.

Highlighted Features:

  • Provides a long-lasting joint.
  • High-quality alloy steel bodies with an anti-kickback design.
  • C3 micro-grain tungsten carbide blades.
  • Heat-resistant Teflon layer prevents sawdust, resin, and pitch build-up.
  • It goes with solid wood, particleboard, MDF, plywood, and other materials.
  • It can’t be used in electric drills or drill machines, designed for desktop engraving equipment only.

#5. ROOCBIT 45 Degree Lock Miter Router Bit

ROOCBIT 45 Degree Lock Miter Router Bit

Without strain to hold the boards in place during clamping, the interlocking 45° cuts will generate solid joins. It will also give more glue area, resulting in a robust and long-lasting connection.

These router bits are of high quality and come at a reasonable price. In our testing, it did a fantastic job carving handholds in a redwood cutting board. The manufacturing quality seems to be very nice. It doesn’t seem like high-end steel or anything, but it does the job.

There was some scorching on the surface, but it was most likely due to operator mistake. We’d suggest it to anybody who needs to route circular slots.

This bit performs well in both a handheld router and a router table. These feature a sharp edge that won’t split the wood. The bit edge does not burn or scorch the surface of the wood. It’s a lot of joy to work with wood! Making a wood drawer, window, closet, or other woodworking tasks is a breeze with this kit.

Highlighted Features:

  • High-quality alloy steel bodies with anti-kickback construction.
  • Heat-resistant Teflon layer prevents sawdust, resin, and pitch build-up.
  • Ultra-sharp blades.
  • It works with solid wood, density boards, MDF, chipboard, splint, and other materials.
  • 1-year quality assurance.

#6. KOWOOD Lock Miter Router Bit With 1/4 Inch Shank

KOWOOD Lock Miter Router Bit

The KOWOOD Lock Miter Router Bit has a powerful mechanical locking action that makes clamping considerably simpler.

The wedged tenons tighten up beautifully for a robust corner junction, and the joint has little propensity to move out of line under clamping pressure.

Compared to a standard rabbet or butt joint, the additional long grain gluing surface helps to reinforce the connection.

Our testers said that customers will need patience and practice to use this bit. When we switched on the router, the first one bent; the replacement is OK, but it will require some fine-tuning.

We haven’t tested it on plywood, but it seems to be an issue with softwoods. The ideal wood is hardwood with grain, although some hardwoods are too hard, so try it first.

However, you can easily do some little projects such as bird homes and feeders. Caution: Double-check the shank size required by your router before placing an order

Highlighted Features:

  • Maximum strength and durability.
  • Suited for all types of routers, including handheld and table routers.
  • Reliable for DIYers and skilled carpenters.

#7. APlus Lock Miter 45 Degree Joint Router Bits with Tongue & Groover Set

APlus Lock Miter 45 Degree Joint Router Bits

Tongue and Groove Set and 45-degree joint router bits round up your hardwood tool arsenal. Use this tongue and router bit equipment to improve your hardwood work performance and make stunning handcrafted furniture.

Kitchen and bathroom doors, workplace cabinets, floor tables, bedroom shelves, outdoor frames, walls, and more may all benefit from this material.

The blade’s sharpness is ensured by its unique design, endurance, and impact resistance, making it your first option in terms of quality. Anti-recoil body made of hardened steel. Teflon coating is heat and construction-resistant.

This pair of grooving and grooving cutters are pretty functional. Suitable for cutting wood, MDF, chipboard, and compact plywood panels; avoid cutting ferrous metals and other materials like steel, iron, sand, and so forth. Check the suitable shank size for your router before buying. You have both ½” and ¼” options here.

Highlighted Features:

  • The most complete work tool kit on the market.
  • Reliable craftsmanship and durable steel body
  • Ideal for homes and DIYers.
  • Extremely versatile work tools.

#8. ZOKMOK Plus 1/4 Shank Joint Router Bits Set

ZOKMOK Plus Shank Joint Router Bits Set

This is universal bits set as long as your router has the proper shank collection and you know the cutter diameter you’ll be cutting when purchasing.

In our testing, this bit was used to construct two 12″ floating shelves out of plywood. It worked well as planned after it was correctly set up. We’re not sure why you would pay more than $100 when this one is so much less expensive. The price is just too great!

This sort of 1/4 shank woodworking joint router bit may flex due to its short clamping. Before cutting, do a test cut. The 45-degree lock miter router bit is not recommended for use with MDF or plywood.

It can only be used with a tabletop router. Suitable for constructing oblique tenon interfaces in furniture like drawers, cabinets, and various other home DIY projects.

Highlighted Features:

  • Woodworking, edging, trimming, grooving, and veining jobs are all possible with this tool.
  • Workable with woods, MDF, solid wood, particleboard, compact plywood panel, and other materials.
  • Only usable with the tabletop router.

#9. Yakamoz 3PCS 1/4-Inch Shank Drawer Lock Miter Router Bit Set

Yakamoz Shank Drawer Lock Miter Router Bit Set

This 45-degree lock miter router bit comes with an anti-kickback design. It has a heat-resistant Teflon coating on C3 micro-grain tungsten carbide blades to prevent sawdust, resin, and pitch build-up. Cutters can slice cleanly through the material with high hook and shear angles, resulting in clean, splinter-free cuts.

Woods, MDF, particle boards, plywood, panels, soft/hardwood, etc., are all ideal for hand-building a drawer or other woodworking tasks. It’s exclusively for table-mounted routers or desktop engraving machines; it won’t work with portable routers or electric drill & drill machines.

Caution: Please avoid cutting ferrous metals and non-wood materials like steel, iron, and other metal materials, such as sand as well as stone.

Highlighted Features:

  • Maximum strength and durability.
  • Minimal vibration while spinning in the production process.
  • Designed for use with tabletop routers or desktop woodworking equipment.
  • Make smooth surface.

#10. TOOLDO 45 Degree Lock Miter Router Bit

TOOLDO 45 Degree Lock Miter Router Bit

TOOLDO 45-degree lock miter router bit with 1/2-inch shank is suitable for all ranges of routers (handheld router and table router), including TOOLDO, KOWOOD, Black & Decker, and others.

The Carbide-tipped bits maintain their cutting-edge toughness at high machining temperatures caused by faster cutting rates and feeds.

TOOLDO router bits include shear angle technology, which helps to increase cutting quality, speed, and service life. The slant makes it easier to remove wood chips. Join boards at a 90-degree angle with an interlocking profile for flawlessly aligned joints in various applications.

This one is ideal for cutting all kinds of wood, MDF, particleboard, and compact plywood panel with a 45-degree lock miter junction. Cabinet doors, closet doors, windows, wood drawers, windows, cupboards, and other woodworking tasks are all possible with this tool.

Highlighted Features:

  • It’s affordable.
  • Extreme hardness and sharpness.
  • Shear angle technology.
  • The handle is smooth and durable.

10 Lock Miter Router Bits Head to Head Comparison:

Product Brand


Finish Type/Color

Shank Size


Ideal For





1x1x1 inches

Humidors & Jewelry Boxes





4x4x3.5 inches

Thickness Of 1/2" to 3/4"





9.25x4.5x3.75 inches

Material Thickness Of 5/8" to 3/4"





2.36x1.57x1.57 inches

Wood Drawer, Window & Cupboard


Alloy Steel



4.5x4.4x1.9 inches

Wood Drawer, Window & Cupboard





4.3x3x 2.2 inches

DIYers & Experienced Carpenters


Carbide, Alloy Steel, Carbon Steel


1/2" or 1/4"

6.7x3.9x2 inches

Versatility & Convenience


Carbide, Alloy Steel

Silver & Yellow


7x4x2 inches

Drawers, Cabinets & DIYers





5.2x3.6x3.2 inches

Hand Making & Woodworking Projects





7.99x4.37x2.52 inches

Cabinet Doors, Closet Door, Window, Wood Drawer, & Cupboard

What to Look Before Buying a Lock Miter Router Bit:

best 45 degree lock miter router bit

Learn about the essential aspects of a new product before purchasing it. The factors listed below will assist you in determining which is the best lock miter router bit for you.

1. Type of Project

The sort of project you’re working on will always dictate the type of bit you’ll need. The kind of material you’re working with will also influence which bit you’ll require.

Softwoods can be readily cut with high-speed steel or carbide-tipped router bit, but certain hardwoods and metals may need a solid carbide bit for a smooth finish.

Expect to break your first lock miter router bit relatively fast if you’re a newbie who has never used a router before.

Experience will teach you how to apply the right amount of pressure. Beginners should start with a low-cost router bit until they get experience with the instrument.

2. Material

Almost every router bit is made of either high-speed steel (HSS) or carbide.

HSS router bits are constructed of carbon steel and have high heat resistance, so they won’t break if you use them for a long time. These pieces are less expensive and are suitable for occasional router users or novices prone to making errors.

Carbide router bits may be coated fully in carbide or merely tipped in carbide, and they last longer than HSS bits.

Because the bits are made of a stronger substance, they last longer and hold their edge longer than HSS bits, enabling you to spend less time sharpening or changing them and more time utilizing them.

Carbide router bits are more costly and more vulnerable to impact damage, so keep that in mind.

3. Shank Size

A router bit’s shank is the cylindrical component of the bit that fits into the router’s collet. All router bits have a 1/4-inch or 1/2-inch shank, and most routers have interchangeable collets that can accommodate both sizes, while some only take 1/4-inch shanks.

Most routers take 1/4-inch shanks, and they perform the job well, but their smaller diameter might cause them to move about more than the 1/2-inch shank, resulting in less control and accuracy. However, 1/4-inch shank router bits are less expensive than 1/2-inch shank router bits, making them perfect for novices who are sure to break a few parts.

4. Sharpness

The capacity of a router bit to cut through the material easily is determined by its sharpness. A dull bit will diminish the efficacy of your router, produce material burns, and leave you with a rough finish that you’ll have to smooth out using sandpaper.

A sharp router bit slices through material fast and efficiently, leaving no scorch scars behind.

Although this might be difficult to observe when buying a new set, all new router bits should be sharpened at the manufacturer. You may, however, look for router bits that you can repeatedly sharpen to keep a narrow cutting edge.

This will allow you to sharpen your bits yourself or have them sharpened by a professional, ensuring that they are constantly sharp and ready for your next job.

5. The Number of Pieces Included in The Set

Make sure you know what you’re receiving before you buy anything. The number of bits in the kit, sizes, and bit types should all be listed on the lock miter router bit set. Knowing this lets you choose a suitably priced set, so you can confidently tackle your next job.

Frequently Asked Questions:

If you’re still unsure about the lock miter router bit you’ll need, have a look at the frequently asked questions and answers below.

1. How do I decide which lock miter router bit to use?

If you have a certain project in mind, choose the bit that is best suited to it. Consider getting a few straight bits (1/4″, 1/2″, and 3/4″), a few round-over bits (maybe 1/8″ and 1/4″), a rabbeting bit with replaceable bearings of various sizes, a 45-degree chamfer bit, and an ogee bit if you’re putting together a beginner set.

2. Should I get a whole set?

Purchasing a set, such as Yakamoz Lock Miter Router Bit Set, is a handy and cost-effective solution. If you don’t know the specifics and just beginning, buying a set may save you some money and hassle.

3. How to properly use the lock miter router bits?

To get the greatest results from a lock miter router bit, make sure it’s correctly attached to the router and that you’re working on the material and project that the bit was designed for. Using a router takes accuracy and patience.

4. How to clean lock miter router bits?

Start by ordering a router bit and resin cleaner from your local hardware shop or ordering them online.

The solution should be made according to the manufacturer’s instructions before being sprayed or brushed generously all over the router bits’ cutting edges. After cleaning, thoroughly dry the parts and consider coating them with oil to prevent corrosion.

5. How to sharpen router bits?

You should take your router bits to a professional sharpener to give them the sharpest edge for the task. They’ll be able to keep the bit’s right cut and shape while sharpening it to like-new levels.

If you don’t have access to a sharpener, diamond hones may be used to remove a thin coating of the cutting blade’s two edges. Stroke both sides of the bit equally to maintain the bit balanced.


We did all our testing and wrote this article to make choosing the ‘best lock miter router bit’ easy for you. And we can tell you that each of the options we’ve selected here is just that.

So, rather than fighting a never-ending war, just choose one of them! Just remember to check the suitability of your router with the router bits!

Happy DIYing!!

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