How to Cut Baseboard Inside-Outside Corners with Miter Saw

How To Cut Baseboard Corners With Circular saw

If you don’t have a miter saw, the handy circular saw is the next best alternative for ease of use and flexibility.

It can handle molding joints but also other angled cuts by adjusting its angle bracket. It makes both square or straight bevel cuts on high or low baseboard widths.

To use a circular saw, follow these steps:

1. Put the pivot bit in your drill and drill four holes in each corner block piece of trim. There should be two holes at the top and bottom, not too close together, all the way around in every direction.

2. Place a block in one corner and use a level to make sure it is straight. To give greater stability, hammer trim nails through the holes on the block’s exposed sides. The nails should go right into the wall.

3. Use a nail set to sink the nail heads. Repeat steps 2 and 3 for every corner in the room.

4. Measure between two corner blocks from inside edge to inside edge and mark the length on a piece of trim. Measure and mark the adjoining piece of trim. Make sure your pencil lines are straight by using a t-square.

5. Cut the trim slowly and carefully along the lines with your circular saw.

6. Lay the cut trim edge to edge between the corner blocks, making sure the cut edges align evenly.

7. Every 15 inches, drill pilot holes along both the top and bottom of the piece of baseboard. Nail in place with finish nails and sink each one. Repeat with all the baseboard trim.

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How to Cut Trim With a Miter Saw to Absolute Perfection!

Next How to Use a Miter Saw Like a Woodworking God!


How to Cut Baseboard Corners Without Miter Saw?

You may be wondering if it is possible to cut baseboard corners without using a miter saw – well, it totally is.

However, even with this condition, there are specific guidelines to accomplish this task correctly without messing up the joint alignment or baseboard profile in general. The baseboard angles will still be accurate regarding the walls and the floor.

Tips for Cutting Baseboard Inside Corner

  • Measuring and marking steps are very important. If you do this step wrong, all the following steps are “considered” abandoned.
  • The miter saw is essential. You can’t get a standard cut with a poor saw. If you want to cut fast and decisively, you need to invest in the best miter saw.
  • If the cut angle is not perfect as expected, you need to cover the difference with caulk or something like that.
  • You should focus 100% while cutting to avoid unnecessary mistakes.

Step 2 Cut 2 Pieces of Baseboard

Get the baseboard trim material. This may be plywood or medium-density-grade (MDF) fiber board, which is a less expensive option. Measure these boards and mark them, so that you know where to cut. Cut the boards so that they cover the length of entire wall, minus the rounded part at the corner. Use a table saw to cut the boards to size.

How to Cut Coped Joints

This method is much harder than a miter cut. Still, it provides a better fit, so it’s definitely worth the effort. A baseboard serves as a half of a coped corner, which fits flat against the wall, without bevel, and the jigsaw is the perfect tool for this cut. 

Follow the steps to cut a coped joint or coping corner cut joints: 

  1. First, you need to cut the baseboard in length, using a bevel cut would be best, so it exposes the grain end of the baseboard. That way, the jigsaw has more working material.
  2. After that, you need to do a back-cut using the jigsaw, alongside the decorative baseboard’s curve.
  3. Then, ensure the workpiece is safely clamped down on a bench, ideally by making use of bench vise.
  4. Make a curved, 45- degrees angle cut with the jigsaw, to the baseboard’s backside, alongside its surface.
  5. Use sandpaper to finish or file the baseboard. Make sure the other corner fits as well. Ensure that the socket from the back cut is fitting the face of the other side of your baseboard.
  6. Use some brad nails measuring around 1 1/2 inch (with some glue) to install and secure the baseboard securely.
  7. Finally, add paint and caulking around any slight gaps or joints if necessary to pretty your new trim up. 

How to Cut Baseboard Corners

There are a few different cuts needed when installing baseboards. Here are the steps to coping and mitering the ends.

STEP 1: Fit inside corners with a coped joint

First, use the miter saw to cut a 45-degree angle on the end of the trim board. Using the edge of a pencil, rub the profile along where the primer meets wood exposed by the cut. This will leave a dark line along which you’ll need to cut to cope the joint.

Then, clamp the piece of molding to a worktable. Use the coping saw to cut along the dark line that marks the profile. Be sure to hold the saw at an angle in order to backcut the saw, removing the material behind the joint to ensure a snug fit.

Finally, Test fit the joint and adjust the shape and contour of the coped board. Use a rasp, file, or sandpaper to fine tune the profile. A sharp utility knife is also helpful, especially for backcutting the joint and shaving small bits of wood for a tighter fit.

STEP 2: Fit outside corners with a mitered joint

Whereas a coped joint is recommended for inside corners, a mitered joint is appropriate for outside corners. For a clean mitered corner, it’s a good idea to cut your baseboard about 1/16–inch longer than necessary. Doing so ensures a tight fit by enabling you to “spring” the next board into position.

When you’re installing baseboard—or any trim, for that matter—expect to do some re-cutting. Trial and error is all part of the game. When in doubt, it’s always better to cut a board too long than too short and trim it if you must.


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Step 4 Put Together the Baseboard Pieces

Put the 2 larger baseboard pieces along the base of the wall, and then place in the smaller piece between these, right at the corner of the wall. The pieces will form an octagonal shape. While the corner will not be entirely rounded, it will look like it once you finish it.

Step 1: Butt the First Board

Lay your first piece of baseboard in the inside corner. This piece should be cut square (0°) and fit snug against the opposite wall.

How Is A Miter Saw Used?


Before you commence performing your woodwork tasks, ensure you are working in a clear, clean, and safe working area. Wear protective clothing including goggles for eye protection.


Most of the best miter saws are powered by the handles. The blades begin rotating when the handle engages are compressed. Ensure your baseboard pieces are safe and well supported by the best portable miter saw stand or table where necessary.

Baseboard cuts

Baseboard cuts

All marked and well-measured baseboards are supposed to be aligned accordingly. Hold the handles down to engage the blade at all means. With the baseboard piece still in position, lower the blade accurately in a chopping manner. Allow the blade to run through the board. To stop the blade, disconnect the handle. Remove your cuts and raise the blade when done rotating.

You can cut baseboard pieces at an angle by shaping or sliding the saw heads. Miter saws are different, but for shaping both inside and outside corners, it’s advisable to review the manufacturer’s instructions for your model.

Elements of Baseboard Corners


Majority of business baseboards are profiled castings produced using any sort of hardwood, including oak, mahogany or maple. Some creation shaping is pine or fir. It is processed in huge amounts and passes by the names of “farm,” “pioneer,” “commemoration” or “ogee,” among others. It is regularly somewhere in the range of 2 and 3 creeps in width and is generally created in 96-inch lengths. For extra effects, profiled embellishment can likewise be stacked for a progressively intricate appearance. The primary bit of casting is introduced and afterward another piece is set on its edge, over the principal piece, to make shadow lines.


Composite moldings are somewhat like vinyl, yet don’t twist effortlessly. They twist more than ordinary wood, however not as much as vinyl. They have a slender vinyl covering, with a thick particleboard center. Complex moldings can’t be retooled; however, and are left normally white or colored. They are more considerable and give more warm assurance than vinyl and can be cut and mitered, much the same as genuine wood. Composites are the most reasonable of all the baseboard types.


Vinyl shaping is typically white in shading, yet has one major benefit as a baseboard: it’s flexible. You can frame this flexible trim around smooth bends or cause it to fit in with a wall that isn’t square. It fits firmly against a wall and won’t split, since it twists where wooden embellishment won’t. It very well may be painted and it is anything but difficult to miter or cut with practically any sort of saw. It’s moderate for two reasons: there are no imperfections, and you can utilize each and every inch of it in view of its consistency. Vinyl shaping is accessible in any profile that standard wood forming comes in.


This is way of How to Cut Baseboard Corners without Miter Saw, Introducing baseboards in your house is a moderately clear approach to tidy the spot. While it might seem like the general procedure is simple enough for a DIYers, cutting baseboards can be a daunting task.

Best cordless miter saws with handy stands are very effective in cutting boards or metals. However, in a situation whereby there isn’t a miter saw, the guidelines above, when properly followed will undoubtedly help you cut your baseboards to your utmost satisfaction.

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