Confused about how to reduced a 135-degree angle with a miter saw?Don’t worry, we’ve been there.Sure, we deserve to knock the end 90-degree or 45-degree cuts without a second thought, however throw a more facility angle into the mix as soon as tackling a DIY or furniture project, and also we’ve been recognized to be left scratching our heads because that a couple of minutes!Thankfully, cutting a 135-degree angle is pretty basic once you understand the exactly technique, and also that’s what we’ll display you step-by-step in this article.

You are watching: Cutting obtuse angles on a mitre saw

There space five basic steps you need to finish to reduced a 135-degree edge on a miter saw:

Set your saw’s miter gauge come 22.5°Safely do your an initial cutSet her saw’s miter gauge to 22.5° in opposing directionSafely do your second cutCheck your cut for alignment

Keep on analysis as we’ll show you each part of the procedure in detail, including useful step-by-step instructions and also handy tips.
A ‘Back to Basics’ Geometry LessonCutting a 135 level Angle top top a Miter saw – 5 simple StepsCutting a 135 level Angle ~ above a Miter witnessed – an additional OptionRelated QuestionsFinal Remarks

A ‘Back to Basics’ Geometry Lesson

As a ceiling minimum, a miter saw have to be qualified of cut at 90-degrees to enable for crosscutting and also at least 45-degrees both left and right for sensibly acute miters.Some miter saws, because that example, the DEWALT DWS780 the we’ve created a finish buyer’s guide for, can miter approximately a chuck 60-degrees.Thankfully, as soon as it comes to cutting her 135-degree angle, you won’t need anywhere near this capacity, and so, it should be feasible to cut this kind of angle on even the most straightforward saw.Now, you could be thinking…
Good question.Thankfully, there is a way, and also it requires using a series of acute miters (those less than 90-degrees) to cut the as whole 135-degree angle.In our case, we’ll be using 2 symmetrical pieces of hardwood (those cut at the exact same angle) to kind our last angle.
Relative to her miter saw’s blade, a item of lumber will kind a 180-degree angle when placed against the saw’s fence.For example:
an image showing the 180 degree angle across the fence of a miter saw
Calculation 1180° – 135° (the angle we’re looking come cut) = 45-degreesCalculation 245° / 2 (the variety of pieces of timber that will type our angle) = 22.5-degrees
Based ~ above the above, you’ll require to cut both pieces of timber at 22.5-degrees on your miter saw (or table saw, or every little thing else you’re cut with) to accomplish the all at once 135-degree angle.You have the right to use the same process for any type of obtuse edge (i.e. One end 90 degrees but less 보다 180 degrees).For example, plugging 110° into the calculation over would present that the required reduced angle is 35-degrees if inserting 150° would show that the angle required is 15-degrees.Pretty simple, eh?

Cutting a 135 degree Angle on a Miter observed – 5 simple Steps


The first step is to set your miter witnessed to 22.5 degrees.It doesn’t matter which direction you choose here; one of two people left or appropriate will it is in fine, as long as you choose the opposite direction afterwards in step three.Most miter saws, consisting of the one we’re using, will have a particular indent at 22.5° to assist you quickly and also accurately lock in in ~ the correct angle.
an picture showing a miter saw set to a 22.5 degree angle
It isn’t a trouble if your saw doesn’t have this indent.If the doesn’t, simply gauge the place using your saw’s miter gauge markings and tighten the manage to lock the in place.
Line increase your hardwood in your miter saw, one of two people by making use of the saw’s laser (if it has one) or through lowering the tongue (while it no spinning!) to line it up v your reduced line.Clamp the hardwood in location once she happy through the position, and go ahead and also make your very first cut.
an photo showing a miter saw complying with a reduced at 22.5 degrees
You now have actually the first half of her 135-degree angle.
3
Set her Saw’s Miter Gauge to 22.5° (Opposite Direction)
Next, move your observed to 22.5 levels in the contrary direction of your reduced from step one.So, if you reduced to the ideal in step one, readjust the experienced to the left now, or evil versa.
an photo showing a miter saw collection to a 22.5 degree angle in the opposite direction
Whether you’re making use of your saw’s indent or lining up the miter by eye, don’t forget to lock the observed in position before making the following cut.
As v your an initial cut, you line up your wood using the saw’s laser if it has one or by checking the blade against your reduced line.Once positioned correctly, go ahead and also make your 2nd cut.
an photo showing a miter saw following a second cut at 22.5 degrees
You now have actually the second half of her 135-degree angle.
5
Check Your cuts for Alignment
The final step is to ar your 2 22.5° cuts with each other to examine their alignment.If you’ve followed the steps correctly, you must be left with a 135-degree miter angle, as displayed here.(We usage the trend DAR200 to check our angles – it’s a handy tool and also we’ve uncovered it to be very accurate. Girlfriend can find it ~ above Amazon here).
Whether you’re using dominoes, dowels, screws, or simply glue, you have the right to now go ahead and join the 2 pieces together to end up your 135-degree angle.

Cutting a 135 level Angle on a Miter witnessed – an additional Option

Another method to create a 135-degree edge is come bypass 22.5° cuts altogether in donate of the more common 90° and also 45° angles.After all, 90° plus 45° equals the 135° we’ve after.While it might save a little of brainpower, it’ll take more cuts as whole versus the actions above, and also the end result arguably no look as clean, so it no our preferred option.First the all, reduced your stock at 90°, as presented here. This will type the very first part of her 135-degree angle.
Our main concern with this an approach stems native the reality that the two pieces don’t line up cleanly, as displayed below.As you deserve to see, in spite of using the very same size that stock because that both pieces, the cut confront of the 45° item is bigger than the challenge on the 90° piece.Because that this, you’ll require to complete a third cut follow me the blue line shown below to tidy increase the final 135-degree angle.

See more: How To Use My Sheetz Card At Gas Pump ? Can I Use Sheetz Gift Card At Gas Pump


Once you’ve cut along the blue line, you can then walk ahead and also join the 2 pieces to form a irreversible 135-degree angle.Aside indigenous this extr cut, another issue we have actually with this technique versus the one above is the asymmetrical share you get from joining 2 different reduced angles.It’s an individual preference, really, but if us can finish up through a joint the looks cleaner from under cuts, that’ll be our go-to method.For this reason, we’d recommend bypassing this option and also cutting 2 22.5-degree angles instead.

Related Questions

What’s the difference between an acute miter angle and an obtuse miter angle?An acute miter edge is one i m sorry is less than 90 degrees, vice versa, an obtuse miter edge is greater than 90 degrees but less 보다 180 degrees.Does the same process apply to cutting crown molding at 135 degrees?The process is the very same in regards to completing a series of cut at 22.5°.Where it different slightly, though, is that you’ll should keep the crown molding elevated throughout each cut.We’d introduce watching the complying with video, i beg your pardon covers the procedure of cut crown molding at 135-degrees in detail:

Final Remarks

We expect we’ve presented you just how easy the is to reduced a 135-degree miter.From crown molding come furniture projects, you’d be surprised simply how usual this tricky edge is in woodworking and DIY. Thankfully, you now know how to develop clean, accurate miters at 135-degrees with minimal fuss.It’s worth pointing out that you should constantly follow the manufacturer’s indict for every little thing tools you using, and don’t forget to check out the instruction hands-on thoroughly to avoid any type of safety or maintenance worries down the line.If friend have any questions ~ above this article, leave us a comment below and we’ll get back to you as shortly as us can.Good luck!
If you delighted in this article, you’ll more than likely enjoy the following, too:Our other DIY how-to articlesOur other miter experienced articlesOur comprehensive miter observed buyer’s guide