Planer-jointer: the guide to choosing the right one

The planer-jointer is a combined woodworking machine that performs two complementary functions: the jointer flattens a first perfectly plane face on a rough-sawn board, then the planer sizes the thickness by making the opposite face strictly parallel to that reference. It is the machine that turns rough sawmill lumber into straight, square and dimensioned parts, ready for assembly.

You’re equipping your workshop and hesitating between several models? In this guide, WoodPartners details the selection criteria that really matter for a professional, a comparison of 8 planer-jointers and our selection of machines available on the platform.

• The planer-jointer at a glance

• Planer, jointer or combo: what’s the difference?

• The diagram of a planer-jointer

• What criteria should you use to choose a planer-jointer?

• Comparison: the top 8 best planer-jointers 

• Our selection of professional planer-jointers

• Mistakes to avoid when buying a planer-jointer

The planer-jointer at a glance

• The planer-jointer is a combination machine that brings together two operations: the jointer creates a first flat reference face, then the planer sizes the thickness by making the opposite face parallel. It turns rough sawmill wood into straight, square and dimensioned parts.

• The most decisive selection criterion is the length of the jointer tables, ahead of planing width, because tables shorter than the workpiece produce boards that are crowned or hollow. Tables of 100 to 110 cm cover the vast majority of joinery and interior fit-out work.

• Power, cutterhead type and table material should be matched to the workshop’s use. 400 V three-phase and a helical cutterhead are justified for intensive use and hardwood species. Cast-iron tables preserve flatness over time, whereas aluminium is more exposed to coplanarity defects.

• The right model is the one whose tables, power and cutterhead match the wood you actually machine.

Planer, jointer or combo: what’s the difference?

A jointer and a planer perform two distinct and complementary roles in wood preparation, which the combo brings together in a single machine: 

• The jointer comes first, because it creates a perfectly flat reference face on the rough board, as well as a square edge. 

• The planer then takes over and sizes the thickness of the workpiece, machining the opposite face so it is strictly parallel to that reference. The jointer-planer combo groups these two operations around the same cutterhead, on the same machine. 

In operation, it always happens in the order: joint first, then plane. When a twisted board is fed directly into the planer without prior jointing, it comes out thinner but keeps its twist. The feed rollers do flatten it against the table during the cut, which creates the illusion of correction, but the board returns to its deformation as soon as it is released. Getting a flat reference face first is therefore the mandatory starting point for the entire machining chain.

The jointer 

The jointer is the machine that produces the first flat face, the one that will serve as the reference for all subsequent operations. To do this, the rough board is pushed flat across two tables located on either side of the cutterhead: the infeed table sets the depth of cut, while the outfeed table, aligned with the top of the knives, serves as the reference plane. The side fence, adjustable in tilt, makes it possible in the same movement to obtain a perfectly square edge, which will then make it easier to assemble parts without gaps.

The planer 

The planer is the machine that gives the workpiece its final, consistent thickness. The board, already jointed on one face, is placed on the thicknessing table and then automatically fed under the cutterhead, which removes a layer of wood of constant thickness. Since the machine works by referencing the already-flat face, it makes the two faces perfectly parallel. This step guarantees uniform thickness from one end of the part to the other for a clean assembly.

The jointer-planer combo 

Combining these two functions in a single machine switches from one function to the other on the same cutterhead. For a workshop working in a limited space, it is a very practical choice and less bulky than two machines. When a workshop also wants to integrate a saw, you should turn to woodworking combination machines, which bring together a greater number of functions.

The diagram of a planer-jointer

A woodworking planer-jointer is organized around a central cutterhead, framed by the two jointer tables (infeed and outfeed) and topped with a guard. Knowing the location of each component helps you read a spec sheet and understand common adjustments.  The infeed and outfeed tables provide jointing, the thicknessing table placed under the top is used for planing, while the tilting fence, height adjustment handwheel and extraction port complete the assembly.

What criteria should you use to choose a planer-jointer ?

For professional use, six criteria are decisive : 

• jointer table length, 

• planing width, 

• power and electrical supply, 

• cutterhead type, 

• table material and 

• extraction quality

Jointer table length 

The length of the jointer tables determines the straightness of the parts produced, and it is one of the most important criteria. A board can only be jointed correctly if the tables are longer than it is. Concretely, with 80 cm tables and a 120 cm board, part of the workpiece is jointed “in the air”, so it comes out slightly crowned or hollow. This defect often goes unnoticed until glue-up, when joints refuse to close. 

In practice, tables of 100 to 110 cm cover the vast majority of parts encountered in joinery and interior fit-out.

Planing width 

Planing width corresponds to the maximum dimension of a workpiece that the machine can machine in a single pass. This criterion is useful, but it is often overestimated, because a width of 250 to 260 mm is enough for most cabinetmaking and everyday joinery. Wide panels are traditionally built up by gluing strips 100 to 150 mm wide. 

A 300 mm or wider planer-jointer is mainly justified for a workshop that regularly runs wide, one-piece work; beyond that, the real gain becomes marginal given the extra cost and footprint.

Power and electrical supply: 230 V or 400 V?

The available power depends directly on the type of electrical supply, which should be chosen according to the wood species being worked and the workshop’s pace: 

• A 220 V planer-jointer, i.e. powered by 230 V single-phase, is suitable for a workshop machining mostly softwoods and medium-density species, with moderate cuts. 

• 400 V three-phase delivers significantly higher torque and handles sustained production better, making it essential for intensive use, for the hardest species and for large widths. 

Before any purchase, it is therefore essential to check the power supply actually available in your workshop.

Cutterhead type: straight knives, Tersa or helical head?

The cutterhead, also called the knife block, is the rotating part that holds the blades and removes material. Its technology influences the finish, noise level and maintenance cost of the machine. Three solutions coexist today for a professional jointer-planer : 

• Resharpenable straight knives: they offer the most controlled maintenance cost and provide a clean finish on straight-grain woods. 

• The Tersa system: it relies on knives that can be replaced in about thirty seconds without adjustment, greatly reducing downtime. 

• The helical cutterhead: it is equipped with small carbide inserts arranged in a spiral. It significantly reduces noise, limits tear-out on interlocked grain woods such as many exotic woods, and can be repaired insert by insert. Since it is more expensive to buy, it pays for itself with intensive use or on species that are difficult to machine.

The number of knives and the quality of the steel for the cutterhead are also important criteria because a three-knife cutterhead produces a more consistent cut than a two-knife head, especially on hardwoods, because it increases the number of cuts per revolution. As for standard steel, of quality comparable to HSS, it is suitable for all work, including hardwood. Whereas trimetal steel, alloyed with cobalt, keeps its edge longer and is justified for intensive use.

Switching from jointing to planing

Switching from one mode to another refers to the handling that transforms the machine from jointer to planer. On a combo machine, this operation is repeated several times a day. Its simplicity therefore directly affects your productivity and the consistency of your settings: 

• Butterfly opening separates the two jointer tables to free access to the thicknessing table. On some models, it forces you to remove the fence each time you switch. You then have to reposition it and check squareness before resuming jointing. This step wastes time and introduces a risk of adjustment error. If you choose this system, favor a model whose fence stays in place. 

• Lift-up opening tilts the jointer table, mounted on hinges, without touching the fence. The squareness setting is thus preserved from one operation to the next. You save time and get more repeatable results. For a workshop that often alternates between the two functions, it’s the best compromise.

• Machines with independent functions require no opening. Thicknessing is performed without touching the jointer table, and switching from one mode to the other becomes instantaneous. This less common solution equips the most advanced machines. It suits workshops that change functions constantly, at the cost of a larger footprint and higher budget.

Tables: cast iron or aluminium? 

The table material determines the machine’s accuracy over time, and pits two materials against each other: 

• Cast iron adds mass, durable flatness and good vibration absorption. On a professional jointer-planer, these ground tables keep their accuracy for decades. 

• Aluminium, by contrast, makes the machine lighter and cheaper, but it is more prone to coplanarity defects and bending under load. 

For a workshop that produces year-round, cast iron therefore remains the best option. 

Safety and accessories for a planer-jointer

Safety and accessories complete the choice of a planer-jointer to protect the operator and  improve workshop output and comfort.

Safety devices

Safety devices protect the operator from contact with the cutterhead, the most dangerous part of the machine. A cutterhead guard, ideally a bridge type, must cover the knives during jointing and be easy to adjust. An emergency stop button (mushroom stop) must remain accessible and prevent any restart until it is reset. For small-section parts, a push block keeps hands away from the knives.

Useful accessories

Accessories extend the machine’s capabilities and make workshop work easier. The main ones are as follows:

• Chip extractor: a professional planer-jointer produces a considerable volume of chips that must be evacuated continuously. Without suitable extraction, connected to a 100 to 120 mm port and linked to a dedicated workshop extractor, the machine clogs, packs up and loses surface finish quality.

• Power feederpushes parts automatically and proves invaluable for long runs.

• Magnetic knife-setting jigs ensure precise adjustment, provided they are suited to the cutterhead diameter.

• Table and fence extensions support long workpieces, but are only offered on some models.

• Mobility kitallows you to store the machine in a small workshop.

At WoodPartners, we have a particular fondness for cast-iron combo machines. These are machines that go through decades without drifting out of adjustment, and that reward a careful workshop with consistent precision. However, if we reason in the most objective way, the right choice depends above all on your production. The best planer-jointer is never the widest: it’s the one whose tables, power and cutterhead truly match the wood you work every day.

Yves Samama – Wood expert, Société des Experts Bois, founder of WoodPartners.

Comparison: the top 8 best planer-jointers 

This comparison cross-references three machines available on WoodPartners and five references geared toward professionals. The price ranges are orders of magnitude observed on the market in 2026; for models available on Woodpartners, you can contact manufacturers directly to obtain a quote. 

* Power ratings as stated by manufacturers, not comparable from one range to another. 

Our selection of professional planer-jointers

WoodPartners lists three machines : 

• The Felder AD 531 combo and 

• Two Belmash multifunction machines.

Felder AD 531: the workshop combo

The Felder AD 531 is a true combined jointer-planer, designed by Austrian manufacturer Felder for craftspeople and wood professionals. It offers ajointing width of 310 mm, a planing width of 306 mm and a maximum cut of 5 mm. Its massive cast-steel tables ensure long-lasting flatness, while its two-knife cutterhead can be upgraded to a four-knife head or a Silent-Power helical head, to gain quietness and surface finish quality on interlocked grain woods. With a weight of 400 kg, it is aimed at a joinery or interior fit-out workshop looking for a precise and durable work base.

Belmash SDM-2500M: the multifunction 

The Belmash SDM-2500M is a multifunction benchtop machine that combines sawing, planing and milling around a2,500 W motor, with a planing width of 270 mm and a working capacity up to 117 mm thick, the highest in its range. Its steel planing cutterhead is designed for sustained use. It suits the craftsperson who wants to combine several operations on a single frame while keeping workshop footprint under control.

Belmash Universal-2500E: the compact multifunction

The Belmash Universal-2500E applies the same multifunction principle in a more compact format. It also features a 2,500 W motor and a planing width of 270 mm, with a cutting depth of 88 mm. Its value for money makes it a relevant addition for a small workshop. For a machine that also includes a band saw, you should turn to woodworking combination machines, which combine more functions.

Mistakes to avoid when buying a planer-jointer

• Comparing widths before any other criterion, when jointer table length far more strongly determines straightness.

• Undersizing the electrical supply: aiming for hardwoods with a 230 V single-phase machine leads to overheating and forces you to multiply light passes.

• Neglecting dust extraction, which causes clogging and a loss of finish on a machine that is otherwise capable.

• Choosing aluminium tables for intensive use, at the risk of losing coplanarity over time.

• Forgetting to check the availability of consumables (knives, inserts) and the quality of the brand’s after-sales service.

• Underestimating footprint and logistics: a cast-iron combo weighs 140 to 400 kg and requires suitable access for delivery and installation.

Choosing the right planer-jointer means matching the machine to the wood you actually work, rather than aiming for the greatest planing width. Jointer table length governs the straightness of the parts. Power and electrical supply must match the species being worked and the workshop’s pace. Cutterhead type determines finish quality on interlocked grain woods, while cast-iron tables preserve accuracy for decades. 

You now have the elements to make your purchase decision as a professional. WoodPartners lists a selection of combo machines and woodworking combination machines available on quote. Consult our teams to identify the model best suited to your production and your workshop space.