Hems & combined machines · review
A well-documented coverstitch machine running two to five threads, with a 155 mm throat and differential feed. Five European markets; on amazon.com the search returns an accessory, not the machine.
The bottom line The best-documented coverstitch machine in this batch, provided you are shopping in Europe.
Hands-on testing pending. Everything below is either a manufacturer specification, cited as such, or something we verified ourselves.
What we verified. B075NL9JFL designates this machine on amazon.de,
.fr, .it, .es and .co.uk, confirmed on EAN in each case. Listed weight 8 kg.
What we deliberately did not publish. On amazon.com, our search for this
model returned B07577HF2G — the Brother SA231 dual-function fold binder
“for CV3440 CV3550 Cover Stitch Machines”. That is an accessory that carries the
model number in its title, and it passed every automated check we run because it
is a genuine Brother product whose title contains the model. We caught it by
reading the title, dropped the American market, and left it out of the
references below. American readers get a search rather than a link to a binder.
What Brother states. Two, three, four or five threads. Seven stitch types, including a triple cover stitch and both wide and narrow top cover stitch. Colour-coded threading with an aid for the lower looper. A dial for stitch length, adjustable from 2 mm to 4 mm, and stitch width from 3 mm to 6 mm. Presser foot lever, adjustable presser foot pressure, differential feed for elastic and fine fabrics, free arm, and a throat width of 155 mm.
Where we would look before buying. Maximum speed, which Brother does not publish here, and how the machine handles the crossing point where a coverstitch hem meets a bulky overlocked side seam.
| Type | Coverstitch, 2 to 5 thread (manufacturer) |
|---|---|
| Stitch types | 7, including triple cover stitch and wide/narrow top cover stitch (manufacturer) |
| Stitch length | 2 mm – 4 mm (manufacturer) |
| Stitch width | 3 mm – 6 mm (manufacturer) |
| Throat width | 155 mm (manufacturer) |
| Differential feed | Yes, for elastic and fine fabrics (manufacturer) |
| Presser foot pressure | Adjustable (manufacturer) |
| Threading | Colour-coded, with a lower looper threading aid (manufacturer) |
| Weight | 8 kg |
Turn a hem on something tubular without fighting it. A T-shirt sleeve, a cuff, a child's trouser leg — all of them have to pass around the machine body as you sew, and the distance between the needle and the column is what decides whether that is comfortable or a wrestling match. It is the measurement worth comparing across coverstitch machines, and one of the few Brother publishes.
For knits, yes, and the difference is on the underside. A twin needle gives you two parallel rows on the face and a zigzag of bobbin thread beneath, which has limited stretch and can pop when the hem is pulled over a shoulder or a hip. A coverstitch machine lays a looper thread that covers the raw edge and stretches with the fabric. On woven cotton the twin needle is fine; on jersey it is a compromise.
Coverstitch · looper threader · LED
A dedicated coverstitch machine — not a combination unit — with a separate needle threader and a looper threading mechanism. One reference on all six markets we checked.
Best for: Anyone who already owns an overlocker and wants proper twin-needle hems on knits
≈ $700 / £570 / 650 €
Overlock + coverstitch + chainstitch · UK and US only
A combined overlock and coverstitch machine, proven on the UK and US stores only. On the German store the same search returns a set of presser feet, which is the more useful warning.
Best for: A UK or US buyer who wants both operations without two machines on the table
≈ $1000 / £680
Dedicated coverstitch · 6.8 kg
A dedicated coverstitch machine — not an overlocker — on one reference across all six markets. Janome publishes almost nothing about it, and we are not filling the gap from memory.
Best for: Someone who already owns an overlocker and wants twin-needle hems on knits
≈ $570 / 830 €
