A Detailed Guide on How to Cut a 135-Degree Angle on a Miter Saw

5 easy steps on how to cut a 135-degree angle on a miter saw

If you work on wood projects a lot, a miter saw is something you must have in your workshop. It can perform various tasks of cutting wood at different angles.

If you face a situation when you need to cut obtuse angles, it still can be done using a miter saw. The 135-degree angle can still be cut, even though it is a bit tricky.

To help you to understand how to work with all sorts of angles, including obtuse angles, we have created a manual. Following the steps correctly will result in you achieving the cutting of a desired angle in a short time with minimal resources involved. Let’s take a look at the whole process of how to cut a 135-degree angle on a miter saw.

Instructions on how to cut a 135-degree angle on a miter saw

Miter saws are designed to perform all kinds of cuts, including angle cuts. It is a perfect power tool for that, which is locked on top of the framing square firm base.

When you are about to commit the angle cut, you just secure the saw blade at the desired angle, and it performs a cut in a straight position.

Cutting a 135-degree angle can be challenging unless you know specific information. At the first glimpse of the miter saw, you won’t notice any details regarding the 135-degree angle cut. Most miter saws offer only 45-degree angle cuts.

When you put a couple of wood pieces together to form the obtuse angle, once you cut them, they will then have the angle you want, when you put them together.

There are three types of angles you must know about. The right angle is a 90-degree angle. Any angle that is less than 90 degrees is called an acute angle.

Any angle that is bigger than 90 degrees is called an obtuse angle. Now it is time to look at the whole process precisely.

1. Make your miter saw ready for work

Plug the miter saw in and place it on the surface where you are going to be performing the angle cuts. The gauge has to be set at a 22.5 point.

Unscrew the small lever on the side and tilt the head of the miter saw at the 22.5 miter saw gauge. It can be done on both sides, the left and the right.

Choose either of the sides as you will have to do the other one in the opposite direction later any way.

Screw the lever back once the saw blade is set at the desired angle. The tilt angle must be at 0 degrees. Doing so will ensure the straight cut at the miter angle you have selected.

2. Performing the angle cut

Now you have to place the wood you are going to cut correctly. If your compound miter saw comes with a laser, it will be super easy to line it up.

If you don’t have a laser, you can use the actual blade to check whether the wood piece is positioned correctly.

The miter saw has to be off. Push the blade down and check whether it is all lined up with the wood.

When you position the wood as you need, you can complete the miter angle cut. Once this is finished, you are half way closer to completing the 135-degree angle cut.

This way is suitable for cutting various angles, including the other obtuse angles. The key is implementing the correct technique and using the right angle measurement.

3. Setting up the miter saw at a different direction

Now it is time to proceed with the cut in the opposite direction. You have to adjust the head of the miter saw at the 22.5 point, just the other way around.

It is crucial to double-check that the wood is positioned the right way. Either use a laser or drop the miter saw head to see where the line is going to be. Once the angle on a miter saw is positioned, don’t forget to secure it by twisting the lever.

4. Performing another angle cut

Once you know that everything is set the way you need it, the wood is firmly secured and the line of the cut is straight, you can proceed with cutting at the proper angle on a miter saw.

When the cutting is done, you will be holding the other piece of wood that will be the second half of a 135 degree angle.

Now all you have to do is place both pieces against each other on the sides where the cuts were done. If everything is done correctly, you will see a perfect 135-degree angle.

5. Checking the final result

The final step is to check whether you have got the correct angle. Take an angle measuring tool to measure the tilt angle you have cut.

If everything was followed precisely, you will have a perfect 135-degree spring angle.

When you are satisfied with the result, you should attach the two pieces together, so it holds firmly. You can either glue them or use any other method of your choice.

What is the other way of cutting a 135-degree angle?

There is another way of reaching the desired 135-degree angle. You just need to cut twice at 90-degree and 45-degree angles.

This might seem easier, but in fact, this will take way more time. The result might also be not as satisfying as you would expect.

Once you have completed two cuts at 90 and 45 degrees, now that is when it gets complicated. Upon putting the two pieces of wood together, you will notice that the one that is cut at 45 degrees will be longer.

You will have to cut the excess length in order to fit the 90-degree cut wooden piece. The joint can also be uneven and not as smooth as when you use the method described above.

Safety tips when working with miter saws

Safety measures are the most important thing you have to take into account when operating the tool.

  1. Prepare the goggles or a special face mask, that can protect your face from the wood dust.
  2. When setting the saw up, you have to ensure everything is tightened, so the sharp edge of the blade doesn’t hurt you.
  3. It is crucial to also lock the wood in place, so it doesn’t move until you have performed the cut. Otherwise, it is going to be crooked.


What is the angle of 135 degree?

It is an obtuse angle that can be made by doing two sets of cutting at a 22.5 gauge. Each cut has to be done with the different pieces of wood which you will be joining together after that.

Upon putting the wood together, it will form the angle you are after. It is important to measure the accurate miters you have cut, so it doesn’t ruin your project.

How do you cut a 120 degree angle on a miter saw?

To make the 120-degree cut angle, you just need to know the formula for the miter saw. Briefly, you will have to conduct two cuts at a 60-degree angle.

Then the wood planks will have to be joined to form the 120-degree angle you are after.

How do you cut an angle greater than 45 on a miter saw?

This is easy. You just need to calculate everything and cut angles on different planks of wood. When you have done that, place the wood pieces together against the cuts, and you will have the angle you are after.

The miter saw is a universal tool and in the right hands with knowing the right information you will be able to make the cutting at any angle.

To summarize

Now you have found out how to cut a 135-degree angle on a miter saw the correct way, easy and fast. The miter saw just like any other circular saw is an extremely useful tool for anyone who deals with wood projects a lot.

The method described above can be implemented for crown molding as well. Just for the crown molding, you will have to hold the wood pieces lifted when making the accurate miter saw cuts.

If any of your friends are struggling with figuring out how to make a 135-degree angle cut, please share this information with them. They will be able to solve their problem right after reading our guide. If you still have any questions left, contact us in the comment section below the article. We will get back to you as soon as we can!

Serg Cooper
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