Top 10 Best Undercut Saw for Door Jambs of 2022

Best Undercut Saw

Wood or masonry cuts need to be very precise and smooth. Otherwise, you will be tampering with your business image or having some unappealing cuts in your home. But where will you get the best undercut saw? This article is fully committed to that. It has a detailed review of the top-ranked undercut jamb saws. The best part? Still, there is a detailed buyer’s guide to help you in the decision making. Likewise, there are expert-researched answers to the frequently asked question. But first is the review.

Best Undercut Saw

1.Dewalt oscillating tool kit saw.

Are you looking for a powerful undercut jamb that is not only powerful but yet fast to change? Please stick with me; I will give you the real gist. The Dewalt oscillating saw is expertly constructed to ensure that you have an easy time in your workshop. It has a super robust motor of 3AMP. Consequently, it has a very high performance while cutting and sanding. Actually, it is constructed for any troublesome cutting. I mentioned something about fast blade-changing. This is the point; It incorporates a quick-change accessory system that enables the blades to be easily attached and detached. Even better, the detaching and attaching process does not require any wrenches at all. What of its cutting speed? Is it slow or fast? Before I jump right in, note that this tool gives the exact speed you require as the best undercut saw hobbyist. Which are my reasons? That is due to the dual-grip speed trigger that ensures the users get a fast cutting speed. Even better? This dual-grip speed trigger increases the user controls over the device. Correspondingly reducing the accidents risks and promoting very smooth cuts. Nonetheless, if you will be working in dark rooms, there will be no troubles at all. There is a bright LED light that will illuminate your working surface for better clarity.

PROS (What we liked)
  • Weighs only 12 ounces for portability.
  • It has a carrying handle.
  • A swift cutting tool.
  • It can perform heavy-duty cutting.
  • Super easy to change the blades.
CONS (What we didn’t like)
  • It is not fine-toothed.

2. Rockwell RK5132K 3.5 Amp oscillating saw

Our next item is from the Rockwell company, which offers nothing less of high quality. And when it comes to this saw, quality still is promised. Do you need facts? Let’s get started. Can I please start with my best feature? It is the construction of the blade. Well, let’s even keep aside the fact that you can easily change the blades because it is much expected. Imagine the blades have an oscillating angle of 40. Resultantly, it gives the user easy controls alongside fast and smoothest cuts. Are you familiar with the fact that the jamb saws tend to reduce the cutting speed when cutting a heavy load? Newsflash! The Rockwell saw cutting speed rarely varies with the size of the cutting load. It is as a result of the powerful motor of 3.5AMP that ensures it withstands potent stall forces. Are you a beginner and feel that this fast speed is not your thing? Just be patient with me. There is a variable speed selection. Accordingly, you can adjust the oscillating rate to get the cutting speed that is fit for you. Are you happy now? Lastly, this high performing tool is compatible with over 32 accessories and comes with a carrying bag.

PROS (What we liked)
  • High compatibility with multiple tools.
  • It can cut heavy loads.
  • You can regulate the cutting speed.
  • It comes with a three-year warranty.
  • It withstands powerful stall forces.
CONS (What we didn’t like)
  • The sanding pads need to be improved.

3. Dewalt 20v MAX XR oscillating tool

Do you need solid facts that the Dewalt oscillating saw is worth your hard-earned dollars? Check out its features below. To begin with, it is the brushless motor. Thus, no brushes are rubbing against each other, making it an energy-efficient saw. Moving on is the dual grip variable speed trigger. The excellent speed feature ensures that you can match the cutting to rate to the application. Undoubtedly, giving the user greater control. Still, if you will be cutting in the dark areas, you don’t need to worry about the lighting. It has a bright LED light that will illuminate the cutting surface. And when it comes to changing the blades, it is simpler than you could ever imagine. The quick-change accessory system makes it possible to change the blades faster without the need for the wrenches. Nevertheless, the user handle is super friendly. It has perfect cushioning to keep your hands safe and ensure a firm grip for safety. Addedly, it uses lithium batteries, which are known to last longer. However, the batteries are sold separately.

PROS (What we liked)
  • The handle is user-friendly.
  • It is heavy-duty constructed for longevity.
  • You can customize the depth or height for an accurate repeat.
  • Blade changing doesn’t require the wrenches.
  • It has a very high torque.
CONS (What we didn’t like)
  • The batteries are bought separately.

4. IRWIN Dovetail saw

Further is the IRWIN undercut jamb saw, which is recommendable to anyone unwilling to settle for less but a fast, reliable, and convenient tool. Do you think I am overpraising it? Absolutely not. Just in a few and you will ride in my boat. To kick-off is the incredibly versatile blade. The blade is of a reversible design. Hence it can make both left and right cutting. But beyond that, this design enables the user to precise controls with less stress to reduce the possibility of risks. Can we move on? Are you likely to have long cutting sessions? Still, the construction of this saw promises maximum comfort. The handle has a supreme surface to offer both comfort and a firm grip for safety. Beyond that, this tool construction guarantees longevity. Why? The body is of solid steel that is known to withstand rough handling. Hence, an item that will last longer. Further, it has a compact design. Resultantly, it takes very minimal floor area as well as lightweight for portability.

PROS (What we liked)
  • Super light tool for portability.
  • Its construction promises longevity.
  • Performs both left and right cutting.
  • It doesn’t require batteries.
  • It has a comfort promising handle.
CONS (What we didn’t like)
  • The spring-loaded mechanism makes the blade unstable.

5. Kraft tool FC518 undercut door jamb saw.

Beginners require a cutting saw that has less brainy operations and still promises fine cuts. An example of such an item is the Kraft jamb cutting saw. Its operations are the simplest ever, with a 12-inch blade for the smoothest cuts. Besides the fact that you can reach all hard-to-reach parts due to the long blade, its changes are also simple. I mean, you can easily replace the blade without a need for an expert. When it comes to the comfort of your hands, the handle promises precisely that. It is super smooth with finger-like patterns. The best part? You are not ready for a saw that will waste in a few weeks? We got you your perfect match. This particular saw has a sturdy construction. Talk of its steel blade, wooden handle, and every other part is super robust to withstand rugged conditions.

PROS (What we liked)
  • It does not require batteries.
  • Very light for portability.
  • The handle promises comfort.
  • Sturdy construction for durability.
  • The blades are easily replaceable.
CONS (What we didn’t like)
  • The blade is hugely thick.

6. Crain NO.835 heavy-duty undercut jamb saw.

Getting an undercut saw that is durable, fast, and powerful was never easy. Not until the Crain undercut saw was released into the market. Honestly, it is the best undercut saw that has most, if not all. Why? The first reason is its motor. It has a super powerful motor of 13AMP. No need for more stories; with such a powerful motor, you can agree it can cut almost everything. Our next care is the nature of its cuts. For lack of a better word, let me say it offers smooth cuts. Mind you; it also provides the best sanding. Beyond that? If you got an area you think is hardest-to-reach, the blade is constructed for exactly that. It is super lengthy to cut undermost places and even on inside corners. Can we look at the handle now? I hope you are not thinking of anything less than a comfy handle. It has an excellent texture and exceptionally even for maximum comfort. Similarly, this excellent saw operates fast due to the powerful motor and the expert crafted blades. But more importantly, you will enjoy the smooth operations and cuts for a long time. That is due to the firm aluminum construction that is safe from rust hence, long-lasting.

PROS (What we liked)
  • It can cut innermost places.
  • Aluminum crafting for longevity.
  • Very comfortable handle.
  • A super-fast saw.
  • Quite simple to operate.
  • A powerful motor for heavy-duty cuts.
CONS (What we didn’t like)
  • Quite a heavy device.
  • The dust collection is not suitable for masonry cuts.

7. Roberts new QEP 10-56 electric undercut jamb saw.

Let’s now look at the Robert jamb saw that had brought a whole new experience in both wood and masonry cutting. Before I jump in, I hope you have noted it is a multipurpose tool. That is, it is a wood and masonry cutting machine. But the best part is that it maintains preciseness and accurate and fast cuts in both materials. The patented design ensures not even a single cutting design is troublesome. That includes the inside corners. Though what shocks me most is that you can adjust the cutting height and depth. Absolutely, it ensures you have control over the nature of the cut you need. The best part? The blade offers nothing short of simple operations. This is what I mean; you can easily control it and replace it all by yourself. Likewise, the trigger takes the controls to a higher level of simplicity. It is easily accessible for fast speed changes. Oops! I should have started with the motor. Because, honestly, it avails a tool for a real saw hobbyist. The motor is robust to cut heavy-duty loads with much ease.

PROS (What we liked)
  • Patented design to cut inside corners.
  • The trigger is easily accessible.
  • The cutting depth is adjustable.
  • It cuts both kinds of wood and masonry.
  • It comes with a carrying case.
CONS (What we didn’t like)
  • The dust ports need to be improved.

8. Galax PRO 22000 OPM 1.5A oscillating multi-tool

Do you feel it is time to take your cutting experience to a higher level? That is possible but not without an excellent performing saw such as the Galax undercut saw. Why do I recommend this tool? First is the obvious reason, the motor. It is no secret that if you compromise anything in a saw, let it not be the motor. Its motor provides robust-like power that facilitates 22000 oscillations per minute—consequently a fast-speed cutting machine. Further, due to its powerful motor, it is a multipurpose tool. In fact, it can be used for any type of cutting, grinding, sawing, and trimming. Still, when it comes to the materials you can work on, versatility is yet promised. It can be used on plastic, ceramic, wood, skirting board, non-ferrous metals, laminates, carpets, and much more. Alike, all credits to the universal screw make it possible to attach and detach the blades easily. Truthfully, there is relatively minimal downtime, and you will get back to work in a few seconds. What of the ergonomic handle? The comfy promising handle ensures optimal controls and a safe grip. But even better, due to its compact design, all transportations are possible. Yet, the small base area ensures it takes minimal storage space.

PROS (What we liked)
  • A relatively lengthy power cable for flexibility.
  • Minimal downtime while changing the blades.
  • Very simple to operate.
  • A soft handle for better controls.
  • Multipurpose cutting, trimming, and sanding tool.
CONS (What we didn’t like)
  • The repair parts are slightly expensive.

9. Dremel US40-03 ultra-saw

Yet, this is another multipurpose undercut jamb saw that understands no limitation. I am not kidding. Do you need facts? It has a 7.5 amp motor. Subsequently, it is super-fast, but more importantly, it can cut even the heavy-duty workpieces. Thus, it handles multiple tools such as tiles, metals, plastic wood, and masonry. Also, you can perform different types of cuts. The wheels have two different positionings to facilitate rip cuts, plunge cuts, and flush cuts. And when changing the blade for the different materials, expect no troubles at all. There is a quick-change system for effortless blade attaching and detaching. Can we check now on durability? There is a metal foot, sturdy guard, and a long-lasting body case to ensure you receive a long-living tool. Lastly is the cutting speed. As a matter of fact, it has 13,00RPM, which assures a fast cutting speed.

PROS (What we liked)
  • Compatible with up to 5 accessories.
  • Super-fast blades.
  • Easy to change blades.
  • Sturdy construction for durability.
  • The depth guide is adjustable.
CONS (What we didn’t like)
  • It cannot cut beyond ¾” deep.

10. Roberts 10-47-6 20-tooth carbide undercut jamb saw.

Lastly, this tool from Roberts Company is ranked as the best undercut saw for every woodworker. Probably, it is because of the straightforward operations. That is due to the excellent controls the blade and the soft handle offers the users. Still, there are fast blade changes. Even a newbie can easily remove and attach the blade with much ease. Nevertheless, the blade is a 20-tooth type to give the cleanest cuts possible. Another thing assured by this undercut saw is durability. The handle, blade, and body are constructed to withstand rugged conditions. Further, if you need a fast tool, it’s motor avails fast oscillations for a fast-cutting tool. More importantly? If you are dealing with a limited budget, this is your tool. Without inconveniences, you will get just as powerful and reliable tools as you expect.

PROS (What we liked)
  • The bade is quite lengthy for hard-to-reach areas.
  • A very smooth handle.
  • Strong construction for longevity.
  • Cuts super-fast.
  • A mighty motor.
CONS (What we didn’t like)
  • Not suitable for masonry cuts.

Buyers guide

Are you in a dilemma on which jamb saw is worth the money? You don’t have to face the risks of guesswork. Below is what you should put into consideration.


Before I jump right in, strictly if you will compromise on anything, let it not be the motor. Allow me to explain why. The motor gives the saw the driving force. Actually, the motor determines which materials you can work on, the types of cuts you can perform, and the speed. Now, what should you consider to get the best undercut saw? Motor racing should be as high as possible. This is a rule of thumb; the higher the motor rating, the powerful and fast it seems. Still, there are two types of motors designs, with or without brushes. Ideally, a brushless motor is recommendable due to its energy efficiency and high torque.


The next quite critical feature is the blade. How should the construction of blades be? To begin, they should promise durability. I mean, the construction should be of a heavy-strength material to avoid flimsiness. Still, the blade should be quick to attach and detach. That assures minimal downtime while repairing the blade or when changing it for different materials. Likewise, long blades are exceedingly recommendable, especially if you are anticipating any hard-to-reach cutting surfaces.


Likely you will have to hold the saw while cutting or else when changing the location. Consequently, its weight is an essential factor too. It should be relatively lightweight to reduce hand strains. Also, most of the undercut jamb saws have handles. The handle should be super smooth and offer a firm grip for safety.

Oscillations per minute

The cutting speed is much determined by the oscillations per minute of the saw. The fast is the oscillations per minute; the fast is the saw. However, some saws have a speed trigger that is used to adjust the cutting speed. In such a case, the trigger should be highly accessible.


Purchasing a mediocre crafted tool turns out to be expensive in the long run. To guarantee durability in an undercut jamb saw, you should check the blade, body case, and carrying handle. Ideally, the body should be rigid for rugged conditions, while the blade is of a non-rusty material.

Frequently asked questions

What is an undercut saw used for?

An undercut saw is a powerful tool that can make undercuts indoors, corners, masonry walls, and hearths. They are straightforward to use and typically with removable blades for multiple uses.

Which is the best undercut saw for beginners?

I would recommend the Galax Pro 22002 saw to not only beginners but even professionals. Why? First, it gives maximum user controls that are needed by every beginner. But more essentially, it has the smoothest cuts, simple operations, and little downtime when changing the blade. Those are features needed by not only beginners but as well as the professionals.

Which is the best undercut saw?

Frankly, most saws will give a high performance. Among them is the Roberts new jamb saw. It has a powerful motor that offers fast speed and a high level of versatility in the cutting materials.

Do undercut jamb saws cut masonry?

Some of the best undercut saws can cut masonry—however, not all of them. Typically, such tools have a sturdy motor and easily removable blades. Besides, they are compatible with multiple accessories.

What is a brushless motor?

A brushless motor implies that the saw has no brushes rubbing against each other. Consequently, there is minimal or no energy loss. Such saws usually have a higher torque. However, that is at the expense of a higher budget.

Final Verdict

In this era, it would be ironic to blame a saw due to poor cuts. Why? That is because there are the best undercut saws that are affordable and deliver the cleanest cuts, trims, or sanding. Am I realistic? Sure I am. If you find it hard to believe, check this best undercut saw review. Addedly, there is even a buyer’s guide with details of factors you should consider to get a high-performing device.

About Amelia

I am a physician, writer, traveler, painting artist and decided to devote my life to adventure, writing, image, and travel. In search of my own geography, the mystery of distant lands is my playground, the diversity, and richness of human nature the source of his testimony. I claim the subjectivity of the gaze both in writing and in the image, placing myself at the height of interest in those who live on the less enlightened side of the world.

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