Hems & combined machines · review
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.
The bottom line The right answer for a second machine, provided you understand it is not an overlocker.
Everything below is either a manufacturer specification, cited as such, or something we verified ourselves.
What we verified. The reference B07FM7WCDH designates this machine on all
six Amazon stores we checked, confirmed on EAN.
A warning about the listing itself. The German product title reads “Bernette B42 Overlock Overlock Overlock Overlock Overlock…” — the word repeated eight times. That is keyword stuffing on the seller’s side, and it matters here because the b42 is not an overlocker. Someone searching for an overlocker will find this machine, and it will not do the job they are buying it for. We would rather say that on the review page than let the listing do the talking.
What the manufacturer states. A coverstitch machine described as suitable for private and professional use, with a separate needle threader and a looper threading mechanism, LED work lighting, an extended work surface, and a starter set of feet, needles and accessories. Listed weight 8.62 kg. Bernette states it handles fine knits, stretch fabrics and heavier materials.
Why the threading mechanism is the headline. Loopers are the reason coverstitch and overlock machines sit in cupboards. A machine with a mechanism for threading them, rather than tweezers and a diagram, is a machine that gets switched on — and that is worth more than any stitch specification on this type of product.
Where we would look before buying. How cleanly it handles the join where a coverstitch hem meets a bulky overlocked side seam. It is the moment these machines skip stitches, and it happens on almost every T-shirt.
| Type | Dedicated coverstitch |
|---|---|
| Threading | Separate needle threader plus looper threading mechanism |
| Lighting | LED |
| Included | Presser feet, needles, threader and accessories (manufacturer) |
| Weight | 8.62 kg |
Same category, nearest budget — what else the same money buys.
No, and the Amazon title is actively misleading on this point — it repeats the word 'Overlock' several times. A coverstitch machine makes the twin-needle hem you see on bought T-shirts. It does not trim and enclose a seam edge. If you own neither, buy the overlocker first.
If you already own an overlocker, dedicated, every time. Combination machines are excellent value on paper, but converting between overlocking and coverstitching takes long enough that people stop alternating — which means they stop doing one of the two operations on the same garment.
8.3/ 10
The right answer for a second machine, provided you understand it is not an overlocker.
Anyone who already owns an overlocker and wants proper twin-needle hems on knits
At 700 $, it sits 0 % against the 700 $ median of the 5 models in this category published here.
A reference exists on these Amazon stores: France, Germany, Italy, Spain, United Kingdom, United States. Listed is not the same as in stock — availability changes daily.
Details checked on August 11, 2026.
Specifications: manufacturer sheet and Amazon product page. Prices and availability: Keepa. No product on this site has been physically tested.
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
Coverstitch · 7 stitch types · 155 mm arm
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.
Best for: Hemming knits properly, and anyone who has outgrown a twin needle on a normal machine
≈ £600 / 800 €
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 €
