How To Cut Crown Molding Inside Corners

How to cut crown molding inside corners? There are two techniques for cutting crown molding in an inside corner. This is to cut two pieces at an angle and join them together. This is generally achieved with a miter saw. When it comes to perfect 90-degree corners, this technique works best because you don’t have to worry about strange angles. Another alternative is to deal with your corners. A single piece of crown molding is placed on top of an uncut piece that sits against the wall to cope with them. To do this, first miter one length, then use a coping saw and file to remove the wood behind the cut. Cheating the corners will result in a more precise fit, but it’s harder to accomplish and requires more effort.

The main benefit of this approach is that no bevel cut is necessary. As a result, when setting crown materials flat and adjusting the saw for out-of-square corners, all the user has to do is adjust the miter mechanism, as opposed to both the miter and bevel systems when working with crown molding laying flat.

Cutting Crown Moulding

There are four types of cuts to consider when chopping crown molding, and each is useful in certain circumstances. When you first start cutting crown molding, practice on tiny scraps rather than costly materials so that frustration doesn’t ruin the project. While you’re learning how to cut crown molding, keep these points in mind:

  • Once you have determined the crown molding’s angles, a power miter saw is the easiest method to cut it. The saw may be adjusted to cut at any angle, such as 45 degrees for one side of a standard 90-degree corner. To the left or right, set the saw to 45 degrees.
  • On the miter saw, crown molding should be cut upside down. The molding has flat edges that touch the wall and ceiling. When cutting with this piece, utilize these “flats” to keep it securely in position on the saw’s base and fence. Because the slope of crown molding when installed is reproduced, there is no need for a bevel cut.
  • The top of the molding will rest on the saw’s horizontal base. The wall edge of the molding, or bottom, should be positioned against the saw’s vertical fence.
  • Remember that the less ornate area of crown molding is generally on the bottom, so position it against the fence while trimming.
  • Save the right end of the cut for an inside corner on the left side of a wall by pivoting the miter saw blade 45 degrees to the right. Save the left end of the cut for an inside corner on the right side.
  • To cut the left side of an outside corner, swing the blade to the left and keep the right end. To trim a miter on the right, swing the blade to the left and hold it there.
  • When using a power miter saw, put on an appropriate ear, dust mask, and eye protection.

How To Cut Crown Molding Inside Corners

Mitering Joints To Match Equal Cuts

Spend 10-20 Minutes Mitering Your Corners

Mitering your crown molding entails cutting each corner at an angle to create a smooth fit. To cut two halves of molding with half the corner’s angle, use an angle finder and miter saw. However, if your cuts aren’t precise, there will always be a visible seam where the 2 lengths of molding meet, and you’ll wind up with a space between the 2 pieces.

  • Mitering a corner takes about ten minutes per piece, but it might take you a bit longer if you have never done it before.
  • If you are sure your wall is level, this is a wonderful option. Check to see if the wall near your ceiling is smooth using a level. This technique will require two angle cuts to join two pieces of crown molding together.
  • Inside corners are any points where 2 walls meet at an internal angle, creating a 45-degree angle as you look at it. An outside corner is one where the two walls form an external angle of 135 degrees.

Determine The Angle Of Your Corner Using A Set Of Angle Measuring Tools

Place one-half of your angle finder against a wall. Adjust the other half of your angle finder with your free hand to align it flush with the adjacent wall. Using the pointer on your angle finder, measure the angle of your walls. Your walls are most likely to be at a 90-degree angle.

If you don’t want to buy an angle finder, a combination square or an adjustable protractor may suffice. Digital angle detectors make reading angles easier.

Measure The Wall And Make A Mark Where You Will Be Cutting

To calculate the length of the wall, use a measuring tape. To establish where you’ll make your bevel cut, take your crown molding and measure how far it extends past the wall. To keep track of where one is going to install the same in the corner, mark the back and bottom of the crown molding using a pencil.

To Cut At A 90-Degree Angle, Set Up Your Miter Saw On The Bench

Flip the handle or press the unlock button to untie the rotating table on the miter saw. Depending on how your table’s guide is built, turn the needle until your indicator reads 0 or 90. You’re fine as long as the blade is perpendicular to the crown molding.

Based On The Angle Of Your Wall, Adjust Your Blade For A Cut At An Angle

Slide the handle on your blade until the indicator is lined up with the desired angle. Set your miter saw to cut at 45 degrees if your wall is 90 degrees. Otherwise, divide the corner angle by 2 to figure out how far you will have to cut crown molding.

Whether you move your blade to the left or right depends on whether you’re cutting for the outside or inside corner of a wall. So, if you need crown molding to line up with an interior corner on the right side and you’re working from the front, switch your angle 180 degrees.


It might be intimidating when you’re first learning how to cut crown molding, but it is simply a matter of knowing your angles and cuts, as well as the perfect dimensions of the room and ceiling of the space you are working in.

These are just three of the most frequent cuts you’ll make, as well as the methods for making them. There are many alternative ways to cut crown molding, and they all have their own set of pros and cons.

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