12 best mortising chisel bits

Mortising chisel bits are specialized woodworking tools used for creating square or rectangular holes, known as mortises, in wood. These chisel bits are an integral part of the mortising process and are commonly used with mortising machines or drill presses. Here are key points related to mortising chisel bits:

Purpose: Mortising chisel bits are designed specifically for cutting mortises, which are slots or recesses in wood that typically receive a tenon (a projecting part of a piece of wood) to create a strong joint in woodworking.
Construction: These chisel bits are typically made of high-speed steel or carbon steel, offering durability and sharpness needed for cutting through wood. The cutting edges are ground to a specific angle suitable for efficient mortise cutting.
Size and Types: Mortising chisel bits come in various sizes to accommodate different mortise dimensions.They are often categorized based on their size, and the user can select the appropriate size for the specific woodworking project. Some common sizes include 1/4 inch, 3/8 inch, 1/2 inch, and so on.
Flutes: Mortising chisel bits often have flutes or channels that help to clear away wood chips and debris during the cutting process. This ensures a cleaner and more efficient cut.
Square or Hollow Chisel Design: Mortising chisel bits come in two main designs: square chisel and hollow chisel. The square chisel design is a solid, square-shaped chisel that removes wood as it cuts. The hollow chisel design has a square chisel with a hollow center, and a drill bit within the hollow part removes the wood.
Compatibility with Machines: Mortising chisel bits are commonly used with mortising machines or drill presses. These machines are specifically designed to house and secure the chisel bit, allowing for precision and controlled mortise cutting.
Depth Adjustment: Many mortising machines or drill presses equipped with mortising chisel bits allow for easy depth adjustment. This feature is crucial for controlling the depth of the mortise and ensuring it matches the dimensions required for the specific woodworking joint.
Woodworking Applications: Mortising chisel bits are widely used in various woodworking applications, including the construction of furniture, doors, windows, and other wooden structures where strong and durable joints are required.

In summary, mortising chisel bits are essential tools for woodworking projects that involve creating mortises. They come in different sizes and designs, allowing for versatility in woodworking applications, and are commonly used with mortising machines or drill presses for precision and efficiency in creating mortises in wood.

Below you can find our editor's choice of the best mortising chisel bits on the market

Square Hole Drill Bit, Steel 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 Woodworking Mortiser Drill Bit-7pcs

Based on 128 reviews Check latest price

👍 Sharp -These square hole drill bits made of bearing steel, hardness 56HRC, lengthened core, sharp cutting edge, continuous blade, quick cuttings, high efficiency.
👍 Our woodworking morstising chisel bits set Only use for the opening square hole and keyhole drill -- Square hole drill can not be used on an electric drill, bench drill, drill square holes need to fit a square hole drill drilling (mortise and tenon machine) to use.
👍 Very cost-effective -- Mortise and tenon square hole drilled by SaferCCTV + outer sleeve in the middle of the combination Reduce labor intensity of construction workers, speed up the construction speed, reduce construction costs for construction, installation, renovation, decoration industrie
👍 Drills precise holes with little pressure -- Using different specifications of the square hole drill, matching the appropriate power of the square hole machine, you can play a square hole to meet the requirements - 1/2-Inch(12.7mm), 1/4-Inch(6mm), 3/4inch(19mm), 3/8-Inch(9.5mm) , 5/8-Inch(16mm), 5/16-Inch(8mm), 9/16-Inch(14mm).
👍 Unique service can make you rest assured to buy--Warranty 14 months,a warranty system, to provide repair parts. Professional sellers, and professional guidance, have more tool accessories to choose. Provide professional use tutorials. Often give away free tool products (because we clean stock). Please contact us if you need any of the above services.

User questions & answers

Question:	Do they work with metal
Answer:	I’m no metallurgist, but I’m pretty sure it’s pure silver. I wear it all the time ... I’m the shower ... to bed ... exercising and it has never tarnished or bothered my skin. That’s all I can tell you.
Question:	Will these work with a multico pm20 mortising machine
Answer:	My 18 in 3mm weighs about 12 grams. So I would estimate a 24 inch to weigh about 17 grams or so
Question:	What size is the collar on these bits? I have a 5/8" diameter hole on the mortising attachment and many of the larger bits I see need a 3/4" diameter
Answer:	I just recently purchased this necklace. so far so good! Will it last forever??? How could anything last forever?? Forever is a very long time! Happy with my purchase
Question:	Where are these drill bits made please
Answer:	Yes, it is solid 925 sterling silver manufactured in Italy.

Product features

Square Hole Drill Bit

The utility model in the hole drilled by the rotary body, while the impact of the use of hammer impact force transmitted to the outer body, the material crushing round hole and square head wall, a one-time processing of a square hole, and the dust can be broken slag discharged from the tube

Square Hole Drill Bit

Various existing bits, can only process a circular hole, square hole can not be processed, to machining square hole, must drill the hole or cutting machine processed crude hole, then chisel made from artificial hand

Square Hole Drill Bit

Package include:

Square Drill Bit

Square hole drill is mainly used for woodworking aspects.

Square Drill Bit

These various sizes long square drill bits set can meet most of your needs

Square Drill Bit

Only use for the opening square hole and keyhole drill

Square Drill Bit

Be careful

The blade edges are extremely sharp (be careful) and the bit is well lubricated.

Use with mortise tenon machine can get douBble effect, square hole punch need to use electric drill, hammer and other tools

Delta Power Equipment Corporation 17-001 1/4-Inch Professional Mortising Chisel and Bit Set

Based on 44 reviews Check latest price

Product description

This .25 in. Professional Mortising Bit is designed with a 5/8 in. shank to fit Delta Products. Contains 1 Chisel and Bit Set. Size: 1/4 in. square. Bits made of high-quality steel and resist overheating in heavy use.

Contains 1 Chisel and Bit Set
Size: 1/4 in. square
Bits made of high-quality steel and resist overheating in heavy use
Designed with a 5/8 in. shank to fit DELTA products; also fits most brands of Mortisers and Drill Press Attachments

User questions & answers

Question:	what is the shank size on the square chisel where it mounts in the machine
Answer:	19mm (0.748 or 3/4"). It fits my Mortising machine (Grizzly) perfectly. I would think it should fit most if not all Mortising machines. I used to have a drill press Mortising attachment and I believe it was a 3/4 too, but I really can't remember. Hope this helps!
Question:	How deep will this drill
Answer:	It is required to cooperate with woodworking tenon machine, drill press is also applicable.
Question:	Will this work with a delta 17-935 mortising attachment
Answer:	Shank diameter：4mm, 5.5mm, 6.5mm, 10mm, 10mm, 12mm

Powermatic 1791096 Premium Mortise Chisel & Bits (Set of 4)

Powermatic

Based on 98 reviews Check latest price

Product description

These premium hollow chisel and bit sets are machined from solid bars of the finest carbon steel. They have one cutting edge, one spur and a brad point for superior performance, making consistently clean and truly square cuts.

GROUND AND HARDENED CARBON STEEL: Efficient performance and long life.
EXTRA LONG BITS: Compatible with different mortisers.
CONSISTENTLY CLEAN CUTS: With smooth side walls.

User questions & answers

Question:	what is the diameter of the shank on the square chisel
Answer:	No, you need soecial Device and the price around 90 us dollars
Question:	Will these fit the jet table top 1/2 horsepower mortiser
Answer:	No you can not. You need a designated mortiser or mortising attachment kit for a drill press
Question:	How deep a mortise can these chisels make
Answer:	you would need a dedicated mortising machine or a mortising attachment for a drill press to use these bit/chisels. A drill press will only secure the drill bit , but not the square chisel, so will not work
Question:	Does anyone know if these fit delta 17-924 mortising attachment
Answer:	Several manufacturers- never bought one - just Google drill press adapter for Mortising bits

Meihejia 4pcs Square Hole Mortise Chisel Bit Set 1/4, 5/16, 3/8, 1/2 Inch

Based on 94 reviews Check latest price

Product description

Specifications:

Material: HSS

HRC: 56

Auger Bit Shank: 4.5mm, 5.5mm, 6.6mm, 9.5mm

Chisel Shank: 1/4, 5/16, 3/8, 1/2 inch

Length: 210mm

Weight: 200g each

Note:

Fits all mortising machines such as PowerMatic Mortiser.

If use it on drill press, it needed a Mortise Attachment (Not Included).

Package Includes:

4 x Mortise Chisel Bit

Professional wood mortise chisel bit set for square holes, includes 4 sizes: 1/4, 5/16, 3/8, 1/2 inch (6.35, 7.94, 9.5, 12.7mm).
Fits all mortising machines such as PowerMatic Mortiser etc. Note: If use it on drill press, it needed a Mortise Attachment (Not Included).
The mortise chisel bit set worked well in making mortise, even the harder materials such as white & red oak.
One-time drilling a square hole, and the broken slag dust can be discharged from the tube.
Made of high-speed steel, heat treatment, high hardness, lengthened core, high concentricity.

User questions & answers

Question:	Could these bits be used with drill press and still get same results
Answer:	I recently made 24 3.5" mortises that were 2" wide by 6" in white cedar for a bunk bed for a customer. Used a powermatic mortising machine with these bits. Piece of cake.
Question:	What size bushing will they fit in
Answer:	The Powermatic requires the long stem for the drill bit.

CHEERBIGHT 3pcs Square Hole Drill Bit Mortising Chisel Hole Drills DIY Woodworking Tools (5/16,3/8,1/2 Inch)

CHEERBIGHT

Based on 29 reviews Check latest price

Product description

FEATURES:

For mortising and jointing with strength and accuracy. High working efficiency.

Material: high speed steel, through heat processing, with high hardness drill bits, and sharp-edged square chisel.

It need to be used with square hole drilling machines (square tenon machines). We strongly do not recommend using hand drills or ordinary drill stands (non-square tenoning machines) to match this drill bit to make square holes.

When using continuously for a long time, pay attention to cooling the drill bit.

SPECIFICATIONS:

Material: HSS

Hardness: HRC 48~50

Holder diameter: 19mm(appr. 0.75inch)(circular) - The size of the clamping drill sleeve of the square tenoning machine needs to be greater than 19mm (3/4 inch)

Drilling core length: 200mm(appr 7.88inch )

Square Hole Diameter : 8mm(5/16inch), 9.5mm(3/8inch),12.7 mm(1/2 inch)

Handle diameter: appr. 1/4; appr. 5/16; appr.3/8

PACKAGE INCLUDED: 3PCS Woodworking Square Hole Drill Bits

Product Material: HSS; Hardness: HRC 48~50,long service life, the drill sleeve has a U-shaped design to facilitate the discharge of wood chips and improve the drilling efficiency.
Holder diameter: 19mm(appr. 0.75inch).The size of the clamping drill sleeve of the square tenoning machine needs to be greater than 19mm (3/4 inch)
Square Hole diameter: 8mm(5/16inch)&9.5mm(3/8inch)&12.7 mm(1/2 inch) ; Drilling core total length: 200mm(appr 7.88inch )
Professional wood drill bit, suitable for construction, installation, renovation, decoration industry, etc. It is not suitable for processing metal, glass, plastic, concrete, gypsum board etc.
Note: -- It need to be used with square hole drilling machines (square tenon machines). We strongly do not recommend using hand drills or ordinary drill stands (non-square tenoning machines) to match this drill bit to make square holes.

User questions & answers

Question:	Can it be used with a regular drill
Answer:	Yes, if you have the mortise bit attachment for the drill press. I didn't figure that out until AFTER purchasing them.

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

Based on 49 reviews Check latest price

Product description

Clamping shank diameter: 19mm (Round)

Professional wood drill, suitable for construction, installation, decoration, decoration and other industries.

Note:

Square hole drill can not use electric drill, drill square hole need to cooperate with square hole drill (mortise and tenon) use.

Size: 1/4 Inch (6.4mm), 5/16 Inch (8mm), 3/8 Inch (9.5mm),1/2 Inch (12.7mm), 5/8 Inch (16mm), 9/16 Inch (14mm)
Material: Heat treatment, HRC48~50 high-speed steel.
Suitable for all mortise and drill accessories
It can be used with mortise and tenon machine to achieve double effect
Reduce the labor intensity of construction workers, accelerate the construction speed, reduce the construction cost of construction, installation, decoration, decoration industry.

User questions & answers

Question:	Can these work on a drill press
Answer:	The base plate is about 5 inches.
Question:	where is this made/country of origin
Answer:	Hi, it uses two bulbs.
Question:	Can I use these as they are or do I need to buy other attachments to use them
Answer:	Classic bronze is not bronze at all. It's grey! And once you purchase it you're stuck with it!

Delta Power Equipment Corporation 17-004 1/2-Inch Professional Mortising Chisel and Bit Set

Delta

Based on 13 reviews Check latest price

Product description

This 1/2 in. Professional Mortising Bit is designed with a 5/8 in. shank to fit Delta Products. Contains 1 Chisel and Bit Set. Size: 1/2 in. square. Bits made of high-quality steel and resist overheating in heavy use.

Package Dimensions: 6 L x 0.5 H x 2 W (inches)
Package Weight : 0.5 pounds
Country of Origin : China
Contains 1 Chisel and Bit Set

User questions & answers

Question:	Will this fit a 14-600 mortiser
Answer:	They are 3/4". They should fit fine. They are a actually one size too big for My machine. They are still in the box.
Question:	any problem using this with a drill press
Answer:	I bought mine for the Powermatic 1791310 PM701. They fit. The shank of the chisel portion is the same as the Powermatic set, 3/4" and the chuck for the bit on my machine seems to be the same at 1/2". I looked at the specifications for the Shop Fox and they should work. I recall when I ordered them I thought they might not work but I rolled the dice. The Powermatic set of bits was over $150, and I barley scraped together the money for the machine. Not much left over for bits. After looking at all the other bench top solutions I figured if I was getting a mortising machine I didn't want to waste my time on anything else. So I figured If I found the Woodstock bits to be inadequate I would just return them, and upgrade the bits when I had more money.

Delta Power Equipment Corporation 17-003 3/8-Inch Professional Mortising Chisel and Bit Set

Based on 31 reviews Check latest price

Product description

This 3/8 in. Professional Mortising Bit is designed with a 5/8 in. shank to fit Delta Products. Contains 1 Chisel and Bit Set. Size: 3/8 in. square. Bits made of high-quality steel and resist overheating in heavy use.

Package Dimensions: 2.54 H x 28.447 L x 3.555 W (centimetres)
Package Weight: 0.022 pounds
Bits made of high-quality steel and resist overheating in heavy use
Country of Origin : China

User questions & answers

Question:	Does this chisel fit in a jet 708580 jbm-5 benchtop mortiser
Answer:	I believe it will but check the manual for the 17-935
Question:	will this bit work in a craftsman drill press mortising fixture
Answer:	No, you need a mortise attachment for your drill press, the chisel alone doesn't work in a drill press. The mortise attachments don't fit all drill presses.
Question:	Are these higher quality than those bits that come with Delta's mortising attachment
Answer:	If I understand what you are asking, I think you mean from the top of the bit(opposite the working end) to the shoulder of the 3/4" then I get 2 3/4" approximately for each of them.

Square Hole Drill Bit, 7Pcs Woodworking Mortiser Square Drill Bits, Mortise Press, Steel 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

Based on 36 reviews Check latest price

👍 Drills precise holes with little pressure -- Using different specifications of the square hole drill, matching the appropriate power of the square hole machine, you can play a square hole to meet the requirements - 1/2-Inch(12.7mm), 1/4-Inch(6mm), 3/4inch(19mm), 3/8-Inch(9.5mm) , 5/8-Inch(16mm), 5/16-Inch(8mm), 9/16-Inch(14mm).( Important: the holding diameter is 19MM).
👍 Only use for the opening square hole and keyhole drill -- Square hole drill can not be used on an electric drill,bench drill, drill square holes need to fit a square hole drill drilling (mortise and tenon machine) to use.
👍 Sharp - Mortise press is made of bearing steel, hardness 56HRC, lengthened core, sharp cutting edge, continuous blade, quick cuttings, high efficiency.
👍 Mortise and tenon square hole drilled by SaferCCTV + outer sleeve in the middle of the combination Reduce labor intensity of construction workers, speed up the construction speed, reduce construction costs for construction, installation, renovation, decoration industries.
👍 If you are not satisfied with our products, please contact our customer service

User questions & answers

Question:	will these fit in 1/2 chuck in a drill press
Answer:	I have drilled a 1.5" mortise with this bit, go carefully as the 1/4" bit can bend easily

Product features

Wood Mortising Chisel Countersink Bits

Mortise press is made of bearing steel, hardness 56HRC, lengthened core, sharp cutting edge, continuous blade, quick cuttings, high efficiency.

These various sizes long square drill bits set can meet most of your needs

4pcs Woodworking Square Drill Bits Set, HSS Wood Mortising Chisel Countersink Bits Woodworker Hole Saw Power Tool Kits 1/2 1/4 5/16 3/8 Inch

Based on 21 reviews Check latest price

Product description

4Pcs Woodworking Square Hole Drill Bits Wood Mortising Chisel Set Mortise Chisel Bit Kits Woodworking Hole Saw Sets with Twist Drill DIY Mortising Chisel Power Tools

Features:

Suitable for construction, installation, renovation, decoration industry, etc.

Ground and Hardened high speed steel for efficient performance and long life

Apply for woodworking project,construction,installation,decoration industry

Specification:

Material: High Speed Steel(HSS)

Hardness: Up to HRC48~50

Shape of hole: square, rectangle

Suitable for bench drilling machine, mortising machine or a mortising attachment

Package Included:

1PCS 1/4" (6.4mm) Drill Bit

1PCS 5/16" (7.94mm) Drill Bit

1PCS 3/8" (9.5mm) Drill Bit

1PCS 1/2" (12.7mm) Drill Bit

High quality - these square hole drill bits made of high speed steel, through heat processing, with high hardness drill bits, and sharp-edged square chisel, long life
Widely Used - Great for drilling square holes in wood with a mortising machine or a mortising attachment.
Easy to Use - It will get double effect by matched use with mortise and tenon machine.The square hole punching needs to use electric drill, hammer or other tools.
Save time - these woodworking morstising chisel bits can reduce labor intensity of construction workers, speed up the construction speed, reduce construction costs for construction, installation, renovation, decoration industrie
Drills precise holes with little pressure -- Using different specifications of the square hole drill, matching the appropriate power of the square hole machine, you can play a square hole to meet the requirements - 1/2-Inch(12.7mm), 1/4-Inch(6.4mm), 3/8-Inch(9.5mm) , 5/16-Inch(7.94mm)

User questions & answers

Question:	Can you use these with just a regular drill press
Answer:	You need a mortise drill to use these
Question:	Can I use this with a hand held drill
Answer:	These Mortise Bits are for Woodworking

uxcell Square Hole Drill Bit, 1/2" High-Carbon Steel Hollow Chisel Mortise Power Tool for Woodworking

Uxcell

Based on 37 reviews Check latest price

【SIZE】1/2" square chisel width, 75mm cutting depth, 205mm total length.
【TIP AND EDGE】The best designed Drilling Point tip and 4 Cutting Corner to enable the fast drilling and penetrating into working pieces of wood very smooth and fast.
【MATERIAL】Made of High-carbon steel, through heat processing, with high hardness (48-50 HRC) drill bits, and sharp-edged square chisel, long life.
【ADVANTAGE】With long drill core and square chisel, easy to lock the hole on the wood, can reduce labor intensity of construction workers, speed up the construction speed, reduce construction costs.
【OPERATION】Used with mortise and tenon machine with double effect, and electric drill, hammer and other tools is required for punching square hole in wood.

Product features

Feature

It is only suitable for square hole drills and mortise tenon machine, not for hand drills, bench drills, etc.
It is only suitable for wood products such as MDF, particle board, compressed version, plastic, wood (sandalwood, pine, ash, beech), etc., not for metal, glass, concrete, gypsum board material processing.
The tenon machine cannot be used for milling grooves, only manual grooving.
If there is no tenon machine, first use the drill core of a bench drill or electric drill to make a few more holes, and then use the square chisel of the square hole drill to strike (note that be slow when striking).

Square Chisel

The force point of the drill bit sleeve is on a plane, which effectively protects and avoids dangerous situations such as bursting.

Durable Drill Bit

Made of High-carbon steel, through heat processing, with high hardness and long service life.

U-shape Groove

Designed to facilitate the discharge of wood chips to improve drilling efficiency.

Round Shank

Universal shank type, the drill tail adopts a circular design, which makes the clamping more stable, suitable for drilling square holes in wood with a mortising machine or a mortising attachment.

4-piece Mortising Chisel & Bit Set

Delta

Based on 12 reviews Check latest price

Product description

Includes 1/4 in. Professional Mortising Chisel and Bit, 5/16 in. Professional Mortising Chisel and Bit, 3/8 in. Professional Mortising Chisel and Bit, 1/2 in. Professional Mortising Chisel and Bit. Works great with original Delta equipment.