If you’re new to sewing and have only just started to sew straight lines, corners might feel really scary. But trust me, this is a SUPER easy skill to learn and it is going to have a massive impact on the final look of your projects.
***I highly recommend practicing this on some scrap fabric.*** This is a great way to start feeling more comfortable using your sewing machine and make sure you feel confident with this skill before working on a project that you don’t want to ruin.
Whether you’re sewing a sharp 90-degree corner, a rounded one, or a mitered corner, there are three key points you always need to keep in mind.
1. Slow Down
2. Pivot Properly (I’ll show you how down below!)
3. Keep Your Fabric Under Control
Now let’s walk through all the steps together so you can sew perfect corners every time.
How to Turn a Corner Video Tutorial
Why Learning to Sew Corners is Important
Neat corners make your sewing projects look professional and polished. Whether you’re making clothing, quilts, or home décor, well-sewn corners add structure and durability. Plus, once you master them, you’ll feel more confident tackling different sewing projects!
What You’ll Need
- A sewing machine
- Fabric
- Thread
- Pins or fabric clips
- Fabric marker or chalk
- Ruler
- Iron (optional, but helpful for crisp corners!)
How to Sew a Sharp 90-Degree Corner
If you’re sewing a pillowcase and bag or collar and cuffs, any project with square corners will follow these steps:
How to Sew a Corner
Prep: To sew a corner, you need to take the two pieces of fabric you want to sew together, line them up and pin them in place.
1. Mark Your Pivot Point
Use a fabric marker and a ruler to mark the exact point where you want to turn your fabric – this is called the pivot point. By marking this on your fabric, it helps you to stop at the right place.
Now sure where your pivot point is? Check your pattern!
You’ll want to find what Seam Allowance you’re supposed to use along the sides where the corner is.
Seam Allowance: The distance from the edge of the fabric to the stitches
So, for example, if I’m using a 1cm Seam Allowance, my pivot point is going to be 1cm away from both edges
2. Sew to the Pivot Point
Start sewing along the edge of your fabric. When you reach the pivot point, slow down and stop with the needle down in the fabric.
NOTE: It’s really important for crisp, sharp corners that we stop right on the pivot point.
So, to make sure you get this exactly right, use your handwheel when you get close to the pivot point and stop when the needle hits the pivot point.
NOTE: Always turn the handwheel towards you!
3. Lift the Presser Foot
With the needle still in the fabric, lift the presser foot. This keeps your fabric in place while you turn it.
4. Turn the Fabric
Gently rotate the fabric 90 degrees so that the next edge lines up with the machine’s presser foot.
5. Lower the Presser Foot and Continue Sewing
Once the fabric is in position, lower the presser foot and continue sewing along the new edge.
5. Check how well you sewed the corner
Once you finish sewing check your corner. It should be a nice, crisp 90 degree angle like this one.
What a perfect corner should look like after sewing
How to Get Sharp Corners in Sewing
Now that we have sewn the corner, we need to actually flip the entire project inside out to see how crisp the corner is.
But you’ll probably notice that when you flip your project, the corner isn’t very sharp and it’s probably thick and bulky.
So, to actually make these corners smooth and crisp, we need two more things.
1. Cut the Excess Material
The reason our corner is thick and bulky is because we are trying to stuff the seam allowance from that corner into a very small space. You can see the fabric that all wrinkled in the photo below. That’s exactly what’s causing the lump in our corner.
So, we need to cut it off.
This part can feel really scary but its an absolute must!
And this is another reason why it’s a great idea to practice this skill on scrap fabric a few times so you build your confidence before working with an actual project you don’t want to ruin.
We have to cut off the excess material because if we don’t the corner will be bulky and will never be sharp and crisp.
A. Draw a 45 Degree Line at the Pivot Point
Before we cut off the excess material, we imagine a box in the corner of our project with the pivot point being the center of the box. Then we draw a line from corner to corner.
This is going to be the line we cut. Be careful to NOT cut the stitch line!
B. Fold the Seam Allowance In
Fold the seam allowance toward your project and fold along the stitch line.
When we do this, we can see how the seam allowance will lay inside our project once we turn it inside out.
We want both layers of seam allowance to lay next to each other and not overlap. If your seam allowances are still overlapping, you can draw new lines angled a little further down this time and cut again.
Once your seam allowance has been trimmed, turn the project right side out again and we should see that everything is laying nice and flat now. No lumps or bumps!
2. Use a Point Turner
Now that everything is laying flat, the last step is to make that corner super pointy. You might notice that right now, it’s more rounded or maybe even a little mis-shapen.
To get that corner to be SUPER pointy and crisp we usually need to use something pointy to push that corner out all the way. In sewing, there is a special tool called a Point Turner but you can use chopsticks, pens, pencils, or anything else you have laying around the house.
Simply push the pen, point turner, chopstick, whatever you’re using, gently into the corner until it creates a nice sharp point.
WARNING! Be Gentle! If you push to hard with something that’s pointed it can actually poke a hole in your project 🙁
This is why I’ll say it again, practice this skill on some scrap fabric first!
Now if you’ve done everything correctly, you should have a perfect, pointy corner 🙂
Tips for Perfect Corners
- Go slow: Rushing can lead to uneven corners.
- Use the needle-down position: This keeps your fabric in place when turning.
- Practice on scrap fabric: Before sewing your actual project, practice a few corners to get comfortable.
- Press seams: Ironing your seams makes them crisp and professional-looking.
FAQ About Sewing Corners
How do you keep corners from bunching up?
To prevent bulky corners, trim the seam allowance at an angle before turning the fabric right-side out. You can also clip small notches in curved corners.
What stitch length should I use for corners?
A standard stitch length of 2.5mm works well, but you can shorten it slightly for more control around sharp turns.
How do I get sharp corners when turning fabric?
Trim the seam allowance close to the stitches and use a point-turner or a chopstick to push out the corner neatly.
Why does my fabric shift when sewing corners?
Fabric shifting happens when the presser foot pushes it forward too quickly. Slow down, keep the needle down when pivoting, and use pins or clips to hold fabric layers together.
Sewing corners takes a little practice, but once you master the technique, your projects will look cleaner and more professional. Try these steps on your next sewing project, and happy sewing!
