Some points here apply to all machine-made buttonholes.
But the emphasis here is on sewing 4-step buttonholes, which need some try-outs and practice.
Most mechanical sewing machines (these have no display screen) have a 4-step buttonhole.

Sections here on :
– support,
– marking,
– 1-step buttonhole,
– buttonholes on a basic zigzag machine,
– 4-step buttonhole,
– editing the buttonhole.

Support against distortion and strain

Buttonholes are tightly stitched, so it’s a good idea to add support so the fabric is not distorted by the stitching.
Buttonholes may also take much strain when used, so need to be strong enough to hold shape against a pull.
The support can be :
fusible interfacing – good support for buttonholes that take strain :
– – lengthways strain, as the ends of many machine made buttonholes are not very strong,
– – sideways strain as, unlike hand made buttonholes, there is no connection between the stitches of a machine made buttonhole.
fray check or similar – used before cutting a buttonhole open – also helps buttonholes that get strained.
tear-away embroidery stabiliser – these keep their shape against distortion despite being full of small holes.

Marking the buttonhole position
Check which direction your machine sews in.
My previous machine sewed buttonholes forwards, towards the sewer.
So the marked starting point for a buttonhole needed to be the end away from the sewer.
My newest machine sews buttonholes away from the sewer.
So the marked starting point needs to be the end nearest the sewer.

4-step buttonholes don’t have an automatic way of setting the length of the buttonhole. You have to start and stop the sewing. So the ends need to be clearly visible – on some feet it’s easier than on others.
Starting and ending points – mark cross lines which can be seen clearly each side of the foot.
Centre line of buttonhole – most buttonhole feet have a mark centre front which you can match to the line you want the buttonhole to follow. Mark a line long enough so you can see it in front of and behind the foot.

”buttonhole-marking”

You are marking on the right side of the fabric, so make sure your marker can removed later. If you iron fusible support in the buttonhole area – do it before marking, as some markers are fixed by heat.

These are some general guides on marking and sewing machine buttonholes :
written : Placing and sewing buttonholes, pdf from the University of Kentucky.
video : Sarah Veblen’s class at Pattern Review (Not free).

Machine made buttonholes

The simplest machine-made buttonhole has 4 parts – the 2 side legs, and the 2 end bar tacks.
”m/cbuttonhole”
As sewing machines have added more controls, so various ways of making the process easier have been devised.
So any particular tutorial may be nothing like what your machine does. I’m trying to cover the possibilities here.

1-step buttonhole

Modern electronic and computerised machines usually have a 1-step buttonhole. Less skill and knowledge needed for making these.
Some of the buttonhole feet even have a place where you put a button in the presser foot so it can measure the length automatically.

This video tutorial from Sure Fit Designs shows how easy it is to sew these, and also covers useful information about marking. (From about 8.45 the video shows how to cut open using a special tool.) If you prefer a photo tutorial, here’s one from Tilly and the Buttons.

Machine has no specific help with making buttonholes

If your machine has zigzag stitch but has no specific buttons or controls for buttonholes, you can sew a buttonhole.
Here are a couple of photo tutorials :
Megan Nielsen.
Sew Mama Sew.
Does need practice, especially if the reverse stitching control is not near the stitching area, but it is possible !

4-step buttonhole

The machine automatically sets the position and width of the zigzag stitching, and sews each of the 4 sides of a buttonhole as a separate step. You choose the step, and control the start and stop of each step.

Videos make a 4-step buttonhole look easy, but as you have to start and stop the steps yourself, there is some learning to do. Make samples until you feel comfortable that you can do it, there’s no need to get it right first time !
This video about a Brother machine is a good general introduction which works for many machines.

There are many variations on the process shown in that video.
Different machines start with different sections of the buttonhole and sew them in different directions. So I suggest these tryouts :

Learning to sew 4-step buttonholes
1. Find the best machine settings to sew close zigzag stitch
On good quality buttonholes, the stitches look parallel, close together but not too close.
On some machines the closeness of the zigzags can be altered by the stitch length control.
Stitches too close together : the stitches make a big lump and the stitching gets caught on the presser foot instead of moving on.
Stitches too far apart : it’s obvious that the stitches are a zigzag. Try test stitching with contrasting colours of thread and fabric, so you can see this easily.
What works best is affected by the fabric and the thickness of the thread. So make samples to test the stitch length setting is right before sewing a buttonhole. Start by trying about 0.3mm stitch length.

2. Find out what each of the buttonhole settings does
– start by fitting the buttonhole foot to your machine,
– if it’s a sliding foot, start sewing in the middle of the foot,
– try out what each of the 3 buttonhole settings does – where it sews, and in what direction.

3. Practice stopping at a specific point on the foot
With 4-step buttonholes you control the length of the buttonhole by starting and stopping the stitching yourself.
If your machine does not sew one stitch at a time, finish the stitching manually by ‘walking’ the stitching – turn the hand-wheel (top towards you) to make the final accurately placed stitches.
If you have a sliding buttonhole foot, it will stop the sewing backwards. But, when sewing forwards, you need to stop the sewing at the correct point yourself.

4. Sew a complete buttonhole, in the numbered sequence.
Find out :
a. how to place the buttonhole foot relative to your marked buttonhole, to get a buttonhole in the right place.
b. which end of the presser foot the needle needs to start at for your machine’s direction of sewing.

Here are some of the variations in this process which you may have on your machine.

On some machines you choose the steps on a selector dial.

”selector”
(Janome made machine from John Lewis)

On some machines you choose the steps using push buttons.

”pfaffbuttons”
(Pfaff Select machine)

The sequence of steps may be named by pictures, numbers or letters, see your machine manual. As those 2 photos show, the parts of a buttonhole may be numbered differently by different manufacturers.

Some machines, like the Brother in the video, start sewing with an end bar tack.
Some machines start by sewing one of the sides. Here’s a video from Janome of starting by sewing a side. And here’s a photo tutorial from Tilly and the Buttons showing a machine which sews one of the long sides first.
As well as sewing ends or sides first, some machines start sewing buttonholes forward, some backward.

Different companies use different designs of presser foot. Here’s a different presser foot from Singer.

Sampling and editing the buttonhole

On some machines you can control the width of the buttonhole, using the stitch width control.

On some machines you can control how close the stitches are together, by altering the stitch length control.

In everyday sewing, the tension of upper and bobbin threads is the same.
Buttonholes (and decorative stitches) may get a better result if the upper thread tension is lower than the bobbin thread tension.
My machine is set up to do this. On many machines, you can try lowering the upper thread tension (smaller number) and see if it gives a better result.

Sew test buttonholes with the same fabric, thread and support layers you plan to use, before doing it ‘for real’. Check that the fabric does not distort, the stitches are closely spaced, and the opening is wide enough for you to cut it open without damaging the stitching. The buttonhole may be better if you :
– add more layers of support,
– lower the upper thread tension,
– change the stitch length.
The best overall buttonhole may be a compromise between these.

How does that slider foot work ? Many 4-step buttonholes use a sliding presser foot like the ones in the videos.
With most presser feet you want them to glide smoothly over the fabric. For some fabrics you even need a teflon foot, so the foot can’t stick to the fabric.
But a slider buttonhole foot does the opposite. The bottom of this foot has a gripping surface, so the foot doesn’t move over the fabric, the fabric and foot move together. The feed dogs move the fabric, and the fabric moves the sliding part of the foot.
So this process may not work well with slippery fabric ! Another good reason to make a sample buttonhole with all the fabric and support layers you plan to use. If the layers slide around, fuse or baste round the buttonhole area first.

Machines with 4-step buttonholes usually have no memory. So make notes about the best buttonhole settings and materials for a project if you are likely to be interrupted.

4-step buttonholes can be easy to make, once you’ve got your head round how your machine does it. But you do need to do some testing.
To understand your machine and the general process :
– find out what each buttonhole setting on your machine does,
– practice starting from a marked point,
– practice stopping in a specific place.
For a specific project, find :
– the best machine settings for a close zigzag stitch with this thread on this fabric,
– what support layers this fabric needs to give a stable undistorted wear-resistant buttonhole.

Good Luck with beautiful buttonholes : definitely a sewing skill where practice and sampling can reward you with good results !

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