Cutting Door Jamb with an Oscillating Tool

When it comes to laying wood and laminate flooring around door frames, the technique you utilize may make or break your project. The best way to obtain a seamless appearance is to undercut the door frame. Undercutting enables the flooring to slide below, creating a tidy and professional appearance.

>>>>> How to Cut Bricks with Angle Grinder

People frequently try to scribe out the wood in order to make it fit around the door frame. This technique results in an unsightly gap between both the door frame and the floor. Cutting shortcuts like these will quickly convert a lovely bed into a dreadful one.

There’s no easier way to trim the bottom of a door jamb or casing to let new flooring in or a saddle for a transition between rooms than with a multi-tool equipped with a plunge-cutting blade. Put a scrap of the component to be fitted below the blade, set it on edge, and squeeze the trigger to carve a recess at the exact penetration depth. Trimming door jambs using a multi-tool makes a lot of sense since it’s quick and easy. Furthermore, you don’t have to be a tool specialist to find out how to perform things. Of course, if you don’t have or can’t afford an oscillating tool.

Oscillating Tool:

An oscillating multi-tool combines the functions of a saw, scraper, sander, and grinder into a single tool. We know that now you will ponder on how you survived without it. If you don’t already have an oscillating multi-tool, invest in one, and you’ll wonder how you managed without one. In one portable power tool, you get a saw, scraper, polisher, and grinder. Oscillating tool applications are diverse because the multi-tool can finish work in inaccessible locations, speeding up challenging projects.

Carpenters, contractors, tradesmen, flooring and cabinetry installers, and professional hobbyists all use oscillating equipment. Professionals adore these tools, regardless of their vocation.

>>>>>> Top 8 Best Drill Bit for Cabinet Hardware

Door Jambs:

A jamb is the vertically running flat surface on either side of the door frame. The door jamb is critical to the smooth operation of the door. That’s where the hinges for hanging the door are installed, as well as the striker plate on the opposite door jamb. This method aids in the opening, closing, and locking of the door. The main objective of the door jambs and the entire door frame is to provide long-term support for the door. When the door is mounted, a frame supports this mount. To guarantee that the door hangs level to the floor, the door jambs and other structures placed the components with great care.

Read on for additional information on how to cut door jambs with a multi-tool, the supplies you’ll need, and other less expensive alternatives.

Usage of Oscillating Tool to Cut Door Jambs:

Oscillating tools, sometimes known as multi-tools due to the different blades, perform precisely what their name implies: they oscillate. You may have recently seen one of their razors at a barbershop; we might have a cheap one at home, but the process is the same. Your hair can trim while the razor glides from side to side. An oscillating saw operates on the same concept as a barber’s razor. However, unlike a barber’s razor, a multi-tool can cut through wood, tile, and tile grout, as well as metal and cement, if you use the correct blade for this purpose.

Ensure you have protection goggles, a face mask, and sturdy work gloves on before you begin. There are two primary reasons you would wish to cut door jambs, so we’ll concentrate on them. The first is to install hardwood or tile below, and the second is to add ornamental accents along the seam. Straight blades are great for piercing through the thing you’re cutting, while rounded saws are best for lengthier cuts. It doesn’t matter with a door jamb.

The degree of oscillation is relatively slight, with the basic model oscillating no more than 3 degrees. This methodology keeps the blade from jamming and your tool from overheating. The action is relatively quick, with roughly 20,000 strokes per minute! That’s quicker than a honeybee, which can only flap 13,800 times each minute.

Select the Blade:

It’s critical to choose the right blade for an oscillating tool or multi-tool. Make sure you have the right edge for the job before you start cutting door jambs or starting any other project with the multi-tool. You risk harming your saw and destroying the material you’re missing if you don’t. Oscillating tools can support a variety of blades, including cement and metal-cutting blades. You might amass quite a blade collection. Porter-Cable multi-tools are excellent blades since each one labels a large letter indicating its usage. So, as long as your door jambs are wood, seek for anything with the word “wood” on it.

A rounded blade lets users work carefully and precisely across the wood, but a straight saw enables you to yank more easily against the jamb. Any blade size or shape will do as long as the blade trims the wood. Do you need to alter a tile inside a field or design a bespoke pattern? You don’t want to break it out with a chisel if you don’t have to? Your best bet would be an oscillating multi-tool with a diamond blade.

Further, straight blades are ideal whenever you need to pierce through the object you’re cutting, whereas rounded saws are ideal for longer cuts. It doesn’t matter with a door jamb, to be honest. A round blade allows you to work slowly and precisely around the wood, whereas a straight saw will enable you to yank against the jamb more freely. As long as the blade can cut wood, any will suffice. If you only have a few doors to trim, a flush-cut hand saw will suffice. It’s less expensive than a jamb saw.

Procedure for smooth cutting:

Cutting is not so hard. It’s just you need the right equipment and the suitable method. Once you do it, it will be a piece of cake for you.

  • Start by cleaning off the place where you’ll be cutting your wood. Because your dimensions and cut need to be accurate, so you have a clean finish, please make sure the door jamb and the floor around it are free of dust and oil.
  • Now, you can do the same thing with a whole piece of tile or the decorative element you’ll be using. Place the piece topside down for tile and hardwood. You want the cutting surface to be flush with the floor to avoid damaging it.
  • Hook your oscillating tool to the blade you intend to use. It does not matter if the edge is straight or rounded; what matters is that it lowers down from its base holder so the blade may be down on the floor and your multi-tool doesn’t get in the way.
  • Turn on your oscillation tool and place your blade flat on the backside of your hardwood or tile.
  • Begin cutting your door jamb by moving your saw flat on the surface and gently sliding the blade towards the wood. Begin on the exterior and work your way within.
  • Instead of cutting off separate pieces of wood and tile, you may use an oscillating tool on your door jambs to install your tiles or laminate flooring.
  • An oscillating multi-tool with something like a scraper blade can help you pry up bonded carpeting and laminates for easy removal, as well as peeling paint and tenacious adhesives.

>>>>>> What is Heat Gun and Its Uses?

Maintain the look of the door:

You may often break off the shims when shimming out a window or door frame. Trimming with a multi-tool fitted with a woodcutting plunge blade is the easiest and neatest approach in a tight place like this surrounded by completed moldings’.

You can follow these steps for safe and stylish cutting:

  • Make sure you’ve got everything and that your hand isn’t jerking up or down.
  • Begin cutting the door jamb by circling the whole area you wish to cut with your blade.
  • This purpose might result in cut defects and blade jamming.
  • Remove all of the small wooden pieces you cut out with a crowbar.
  • Finally, vacuum the area to remove all wood dust before placing your hardwood or tile to ensure exact cuts.
  • Leaning your sword against the ornamentation is not a good idea.
  • Full-size completing sanders, belt sanders, and disc sanders are great for significant areas, but they don’t always perform well in tiny spaces, mainly corners.
  • A multi-tool with a purpose-shaped sanding pad might come in help in this situation.

Cutting through different angles:

Trim Cut In: Adding or changing internal partitions required more demolition than construction before the invention of the oscillating tool. You may now make a surgical cut wherever on the wall, but particularly around the baseboard and other trim areas.

Undercut:¬†Cutting the doorjamb and moldings to create new flooring is the only elegant method to install it in an existing area. Previously, this necessitated the use of a costly and risky flush-cutting circular saw or tedious hand cutting. It’s no problem with the oscillating multi-tool.

Trim Door Casings:

When putting new flooring in a home, you may want to cut the edges of the door trim and jamb to create a way for the new flooring. To begin with, the most significant reason to understand how to cut doorjambs is that it will improve the appearance of your floor. It will seem to have been done by an expert. An oscillating multi-tool makes this a simple operation to do. Take a piece of new flooring and set it upside down next to the door jamb to determine how much you need to cut off for a decent undercut. To avoid harming your new flooring’s surface, make sure you turn it upside down before executing the undercut. The very next step is to choose the right undercutting oscillating tool saw blade.

The standard method for trimming shims while installing a door is to score them with a utility knife and then snap them off. It’s a lengthy process, and you end up pushing the shims out of position half the time. They don’t always break off smoothly. An oscillating tool, on the other hand, is ideal for the job. That one is simple, quick, and painless.

Position the blade flat on the flooring and slip it directly into the door frame with your flooring against the door frame. Be cautious not to shift the edge back and forth as it might make an uneven cut. While the multi-tool is on, your offcut will jiggle about. While pressing softly on the saw, use your fingers to secure the offcut.


An oscillating multi-tool may be the best option for tasks where a traditional power tool would be too bulky or unwieldy, or when using a hand tool would take more time and effort than most people want to put in. Warm-up with multi-tools comes with a wide range of cutting blades, spatulas, grinders, and sanding adapters.

The oscillating multi-tool is available from nearly every major power tool manufacturer in one or more varieties. Not all, however, are made equal. Multi-tools are known as “tools only” or kits with various corded and cordless attachments and varying degrees of power. There is, of course, a wide variety of pricing. Your specific demands and budget determine your choice of multi-tools. We are not going to advise you which one to acquire or that they’ll be able to completely replace any number of traditional instruments you could have or desire. However, as the examples above demonstrate, some tasks need the use of a multi-tool. They’re also excellent knuckle savers. Shortly, your door needs a touch to keep it attractive and well-functioning.

Thomas Oscar

Hey, I am Thomas Oscar founder and author of Machinery Judge.
View All Articles

Leave a Reply

Your email address will not be published. Required fields are marked *