Home » Tools » Power Tools » Domino vs Biscuit Joint and When To Use Each One
When you buy through our links, we may earn a commission. As an Amazon Associate we earn from qualifying purchases. Disclaimers.

Domino vs Biscuit Joint and When To Use Each One

Woodworkers spend a lot of time in deciding on the DOMINO joiner vs biscuit joiner dilemma. While the Festool is a premium choice it comes at a cost. And a biscuit joiner is great for glue-up alignment but falls short on angles and some furniture joints. 

While there is little dispute that a DOMINO is more versatile, there is a good debate on what style of woodworking best fits one tool vs. the other. 

In this guide learn when each tool should (and shouldn’t) be used and what’s best for your workshop. We’ll also cover top DOMINO solutions and alternatives like:

  • PROFESSIONALS CHOICE – FESTOOL DF 500 Q  is just simply the best option if your budget allows.
  • BEST BISCUIT OPTION – Dewalt DW682K  will join plywood, face frames and furniture for perfect glue-up alignment.
  • DOWELING JIG COMBO – JessEm Doweling Jig  sometimes two tools are best – pairing this jig with a biscuit joiner is a great compromise.

What is a Biscuit Joint?

Pile of Biscuits
A biscuit joint is made up of a flat, elongated slice cut into both pieces of the wood to be joined. After the cut is made, a pre-manufactured composite wood biscuit is glued and inserted into the slice. The biscuit, then, creates a solid connection between the two pieces of wood and, with glue, will create a sturdy joint.

What is a Domino Joint?

Festool Domino Tenon

A domino joint is actually a mortise and tenon joint that is branded after the Festool DOMINO portable mortiser. A domino joint is made by cutting two matching, elongated slots in the wood to be joined and then inserting the tenon (with glue).

What makes a domino different than a typical mortise and tenon joint? Well, a few things:

  • While a typical mortise and tenon uses one of the wood pieces as a tenon, a domino joint uses a tenon that is inserted into both pieces of wood. If you’re familiar with plumbing, the project is the “female” (times 2) and the tenon is the “male”.
  • A standard tenon is made from the wood used in the project. However, a domino uses a beech (interior) or mahogany (exterior) tenon.

Domino Joiner vs Biscuit Joiner: Understanding the Differences

To start, let’s first take a quick look at the difference in the joints:

  • First up: a biscuit joint relies on a fixed thickness biscuit spline, available in varying widths, and inserted and glued into a cavity created by the biscuit joiner
  • And, biscuits are composite wood in an oblong shape and used only for interior use
  • On the other hand, a DOMINO joint uses a true mortise and tenon of varying thicknesses and widths
  • Mortises are the holes left by the DOMINO tool 
  • Tenons (the wood piece) are either beech or mahogany for use in interior or exterior projects

Which is better? We’ll get to that based on your projects.

Key Features of a Biscuit Joiner

Biscuit Joiner Blade and Fence

The good news is a biscuit joiner is made by many manufacturers. So when shopping you’ll have ample machines to choose from (but overall, a small variety in features).

Later in this article we’ll rundown the full list of manufacturers, but let’s first take a look at the key features of a biscuit joiner.

Biscuit Joiner Overview

  • Rack and pinion fences for ensuring left to right alignment
  • Fence tilts 0 to 90-degrees for cutting biscuits in angles
  • Advanced models have heavy duty aluminum fences that can be clamped for stationary use
  • Biscuit joiners cut to an adjustable depth of 20mm (just over ¾”)
  • Support cutting biscuits sizes of 0, 10 and 20
  • Higher end models have hand held or foot activated production units
  • Some models offer cordless power vs traditional corded

Biscuit Joiner Spline Sizes

How does a biscuit joiner accommodate both narrow and wide material?

By coming in four sizes:

  • #20: ~5/32” thick, 1” deep and 2-¼” wide
  • #10: ~5/32” thick, ¾” deep, 2” wide
  • #0: ~5/32” thick, ⅝” deep, 1-¾” wide
  • FF: ~5/32” thick, ½” deep, 1-¼” wide

Of course, FF stands for face frame which is one of my preferred uses for biscuits. But, I tend to go for a size #10 in face frames for a stronger initial hold and easier gluing.

Key Features of a Festool DOMINO Joiner

While there are options to Festool in a portable mortise and tenon jig they aren’t handheld. Which makes the Festool DOMINO distinct with the following features:

  • Handheld portable mortising
  • Indexed mortises using an optional jig
  • Mortising in round or semi-circular stock
  • Wide range of tenon width and thickness for small to large projects
  • Dust collection
  • Fast and accurate adjustment

Available Domino Tenon Sizes (500 Series)

To start, the 500 series Festool DOMINO supports 6 tenon sizes:

  • 4x20mm
  • 5x30mm
  • 6x40mm
  • 8x40mm
  • 8x50mm
  • 10x50m
And with the larger, Festool DOMINIO XL 700 the tenon size and length increases significantly to:
  • 8x80mm
  • 8x100mm
  • 10x80mm
  • 10x100mm
  • 12x100mm
  • 12x140mm
  • 14x100mm
  • 14x140mm

For reference, 100mm is just shy of 4″. 

So, here’s a good place to stop and pause on the advantages of a domino joiner vs biscuit joiners. While a biscuit joiner will AT MOST go 1/2″ into each side of the wood, a domino joiner will go almost 3″ into each side (remember, 1/2″ the tenon length goes into each piece). Which means a domino joiner will assist with both alignment AND structural rigidity of the joints.

 

Domino joiner vs Biscuit Joints: Strength, Easy to Use, Quality of Finished Piece

Biscuit Inserted into Joint

Now on to the key aspects and comparison between these two tools.

While you might suspect the DOMINO is a dominant tool, each of these types of wood joining tools has its own strengths.

When might a domino joint be more than needed? Well, face frames on cabinets are a great example of a joint that needs to be sturdy during assembly but will not undergo sideways torque during use. So, a biscuit will be fine (and cheaper) in most applications.

And, getting over the price of the DOMINO might be tough. So, even considering pocket hole joinery, I’d still opt for a biscuit joiner if you just aren’t sure how much you’ll need the more expensive (and capable) DOMINO joiner.

Biscuit Joiner Pros and Cons

Pros of a biscuit joiner:

  • Marginally faster than a domino
  • Cheaper initial and ongoing cost
  • Many manufacturers of biscuit joiners and biscuits vs Festool-only domino and tenons 
  • Less setup accuracy required as biscuits can slide in groove
  • Using metric measurements is not required
  • Dust collection optional

Cons of using a biscuit joiner:

  • First, biscuits come in just one thickness (5/32”…or slightly over 1/8″) and have a shallower joint depth
  • Best for only wood surfaces that meet with over 1-1/2”+ of contact space
  • Due to shallower depth in wood and thinner biscuit it is weaker in comparison to a domino joint
  • And last, a biscuit joiner will not make curved biscuit joints

Lastly, you’ll have fewer joints you can make with a biscuit joint. In fact, for any furniture making you can rely on just domino joinery for MOST tasks and skip even a pocket hole jig. 

Domino Joiner Pros and Cons

Now switching over to the domino joint, if you haven’t used either machine you will quickly learn alignment of the biscuit or mortise is KEY. And, due to the biscuit being forgiving in left-right alignment, a domino joiner compensates with features like cross stop and trim stop.

Pros of domino joiner:

  • Controlled width of cut with a simple turn of dial
  • Interchangeable bits for varying tenon thickness
  • Excels at corner joints
  • Cross stop setup allows for repeated, indexed cuts in wider boards or plywood 
  • Trim stop setup allows for perfect alignment of same-width work piece tenons
  • Optional support bracket allows for enhanced support with vertical cuts
  • Hand rail fence allows for wood joints in round or curved material (not possible with biscuits and very tricky with pocket hole jigs)
  • By using the Sipo (mahogany) tenon outdoor projects can be built using the domino joiner

Cons of a domino joiner:

  • Cost (for a casual DIY’er)
  • Higher learning curve than a biscuit joiner as PRECISE layout is required before cutting the tenon
  • Festool is the only manufacturer – and surround accessories like dust collection are all owned by you guessed it … Festool
  • As Festool is German made you’ll need to brush up on your metric measurements

Best Biscuit Joiners

Biscuit Joiner Machine

While there are a variety of biscuit joiners on the market, there are a handful that come to the top. 

So, based on budget and woodworking use here are three top options:

  • Corded: Dewalt biscuit joiner
  • Cordless: Makita for mobile biscuit joints
  • Budget: WEN for starting out

Best Domino Joiners

Festool DOMINO joint maker

This is a bit of a trick question, as there is only ONE: the Festool DOMINO .

So, Festool, depending on how you look at it, fortunately or unfortunately owns the market on portable mortise and tenon joinery.

But, like most tools, you’ll find that you can start with the basics and move your way up with optional accessories.

With that, here’s a good place to consider starting:

  • Go with the package that includes the indexing trim cross stop. Due to many projects requiring joints in plywood this slight upgrade will pay for itself over time.
  • If your projects don’t include hand rails or round pieces then opt out of buying up to a handrail kit until you find you need it.
  • The dust collection kit is a must to keep the bit clear and the machine working optimally
Lastly, there are two grades of the Festool DOMINO, with the larger 700 model capable of tenons up to 5-1/2″ long.

Festool DOMINO Accessories

Festool 498889 beech domino tenons with carrying case

If you are at all considering a Festool DOMINO you have likely seen their other tools, like the class leading miter saws.

And while accessories like the following can drive up the cost, if you are committing to Festool you can choose from:

  • T-Loc Systainer that holds a complete variety of tenons and bits
  • Individual packs of tenons
  • Individual DOMINO cutters
  • Festool dust extractor

Alternatives to a Festool DOMINO

Benchtop mortiser

So if you want a mortise and tenon system but without the cost what are the alternatives to the Festool DOMINO?

First, you are venturing outside of a comparison of a biscuit vs a domino joiner.

But, knowing that mortise and tenons are a stronger joint you can look at the myriad of benchtop mortisers that start around $300 and work their way up in cost:

  • RIKON 34-260
  • Jet Bench Mortiser
  • ShopFox W1671
  • Powermatic 1791310
  • WEN 43012

The trade-off? These units are built for vertical mortising of smaller parts. Which makes the Festool DOMINO handheld more functional for plywood and larger projects.

Frequently Asked Questions

Frequently Asked Questions

How does a biscuit joiner work?

A biscuit joiner works by creating an oblong “half football” shape groove in 2 pieces of matching wood. This groove is filled by a football shaped biscuit which is glued, inserted, and then clamped until the glue is 100% dry.

Can I make biscuit joints without a joiner?

You can make biscuit joints without a joiner, however it will require a table saw with a blade thickness (kerf) the same as the biscuit and set to a precise height. However, this is a MUCH more dangerous solution and should only be attempted by a professional, using all safety precautions, and for longer stock where risk of injury is reduced. A safer solution is to consider the use of wood splines or mortise and tenon joints.

What does a plate joiner do?

A plate joiner is the same as a biscuit joiner and are used to create an oblong hole in two matching pieces of wood. After the joiners have created the hole, a biscuit is glued, inserted and typically clamped until the wood is dried.

Is a plate joiner the same as a biscuit joiner?

Yes, a plate joiner is the same as a biscuit joiner. Both use the same fence system and guides to allow cutting biscuit grooves in wood.

Is a biscuit joiner good for alignment?

One of the best features of a biscuit joiner is it’s ability to quickly set biscuits that will match the height between two surfaces. However, the biscuit joiner only works best on flat surfaces like plywood ends. If your project involves more angles than a domino joint will perform better with it’s higher precision alignment.

What are the alternatives to a Festool DOMINO?

Since the domino system from Festool is proprietary the only alternatives to the system are to use a traditional mortising machine. Or, with a lot of alignment and setup, a square hole setup that attempt to mimic the width, depth and height of a Festool DOMINO tenon.

Is a domino joint stronger than a biscuit joint?

Generally a domino joint is stronger than a biscuit joint. The only time it isn’t? If the domino joint is inserted into an extremely thin stock and weakens the surrounding wood.

Resources

Interested in learning more? Check out the manufacturer resources below for more information.

  1. Festool Domino (manufacturer)
  2. Dewalt Biscuit Joiner (manufacturer)

Summary: Domino Joiner vs Biscuit Joiner

If you have a long woodworking road in front of you and are planning on complex furniture beyond basic cabinet making then a Festool domino joinery system shouldn’t disappoint.

But, for a DIY’er on a limited budget I’d suggest spending your money on either a biscuit joiner or pocket hole jig.

Power Tool Brands for Woodworking
9 Unique Tool Brands For Serious Woodworkers

Makita vs. Dewalt. Milwaukee vs. Festool. Woodworkers are used to comparing tool brands to decide what their next tools should be. But what most woodworkers miss is the unique tool brands that make woodworking faster, easier and improve quality. For example, FastCap has a glue bottle that takes the hard squeeze out of that Titebond bottle your stressed hand is used to gripping. Or, Powertec has a huge line of high quality tools at a much discounted price vs. large

Read More »
Workbench Organization Storage
Easy Workbench Organization With These Unique Solutions

Workbench organization isn’t just important for looks. It makes projects easier to start (and finish) and reduces time spent hunting for tools and supplies. In this guide learn how a few minutes time will have your bench upgraded from messy to tidy with easy to use products like: PEGBOARD ORGANIZERS: will quickly organize tools and parts. And free up valuable bench space. PROFESSIONAL SCREW ORGANIZERS: is a see-through and portable solution for small part and screw organization. BENCHTOP TOOL ORGANIZERS:

Read More »
Best Router for Router Table
The Best Router for Router Tables and Lifts

The best router for router table use is always one that will fit a router lift. But, for woodworkers that will use larger router bits for raised panels or subject the router to continuous use then horsepower and machine durability are a key consideration. While sticking to mainstream routers that are compatible with lifts is generally easy, making sure the router has key features like electronic speed control, soft start and compatible bases for off-the-table use are just as important.

Read More »
Best Cabinet Hardware Jig
Cabinet Hardware Jigs, Templates and Guides for Better Accuracy

The best cabinet hardware jigs are designed to be used for jobs of any size, are made from all metal components and are easy to use. But, for budget minded projects or one-time use, a less expensive jig with a reputation for durability and precision is what DIY’ers or occasional woodworkers will choose.  But, most importantly, the top cabinet hardware jigs will work on all styles of doors, including shaker cabinets that have a challenging inset face. So what makes

Read More »
Best Benchtop Planers Thickness
The Best Benchtop Planers for Small Workshops In 2022

While some woodworkers get by without one, a benchtop planer is usually a must for any woodworker. But finding a quality wood planer that will put a great finish on both hardwoods and softwoods can be difficult. And, since there many types of planers, its worth noting that a benchtop planer typically features: Straight or helical blades Support for boards up to 13-inches (33 cm) Single phase 15-amp motors Adjustable height up to 6-inches (15.2 cm) Single or two speed

Read More »
Best Orbital Sander for Woodworking
Professional Grade Random Orbital Sanders

Until you’ve connected a random orbital sander to a dust extractor you don’t know what you’re missing. Which is why the best random orbital sanders are both great at removing wood but also have the features and power professionals turn to. After using every type of random orbit sander to build cabinets and furniture the simple answer to which random orbital sander is best comes down to owning two orbital sanders: Cordless. There’s no reason to drag a cord around the

Read More »
Wood Vise in Cabinetmakers Top
Best Woodworking Vises, Types and How To Mount Them

Adding a vise to your bench seems simple. But as experienced woodworkers know, buying the best vise for your bench isn’t as simple as buying on price. Serious woodworkers will opt for many vises but a mainstay is always a   for its versatility, compactness and all-wood jaws.  A vises number one job is hold onto your woodworking piece when you need it. And then disappear when you don’t so it doesn’t take up valuable space on top of the bench.  Which

Read More »

Need Help Finding Wood?

Everyone does. Signup for a FREE hardwood directory that organizes 300+ hardwood retailers across the USA.

Disclaimer: DIY projects can be dangerous, hire a professional (link to Home Advisor) if unsure.

free wood (knowledge)

All you need to do is sign-up and as a BONUS receive a guide to 300+ lumber retailers (with price lists).

***CHECK YOUR SPAM FOLDER***