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Brother M343D review

Brother's 3/4-thread overlocker with stepless differential feed and a retractable knife. One reference across five European markets; absent from amazon.com.

The bottom line A well-specified first overlocker, let down only by not being sold in the United States.

Hands-on testing pending. Everything below is either a manufacturer specification, cited as such, or something we verified ourselves.

What we verified. The reference B06WD4LCNT designates this machine on amazon.de, .fr, .it, .es and .co.uk, confirmed on EAN in each case. We searched amazon.com and did not find it: the American results returned the Brother 1034D and ST4031HD instead. Those are different machines, and we have not published their references here.

What Brother states. Cutting, sewing and edge-finishing in one pass with three or four threads. Steplessly adjustable differential feed, which Brother positions against waving and stretching on elastic and fine fabrics. Rolled hemming without changing the presser foot or the needle plate. Adjustable presser foot pressure. Colour-coded internal thread guides, a threading aid for the lower looper, and the machine supplied already threaded. Free arm or flat bed. A knife that folds away so you can finish an edge without trimming it. Listed weight 6.6 kg, three-year manufacturer warranty.

Why “supplied already threaded” is not a throwaway line. An overlocker that arrives threaded can be re-threaded by tying the new cones to the old tails and pulling them through, which is far easier than threading from scratch. It is the difference between a machine used weekly and one used twice.

Where we would look before buying. Maximum speed and the presser foot lift, neither of which Brother publishes on this listing.

What we like, and what we don't

Strengths

  • Retractable knife, so you can overlock an edge without cutting it away
  • Rolled hem without swapping the foot and the needle plate
  • Delivered pre-threaded, which removes the worst first hour

Compromises

  • Absent from amazon.com
  • 6.6 kg of second machine on the table

Specifications

TypeOverlocker, 3 or 4 thread (manufacturer)
Differential feedSteplessly adjustable (manufacturer)
Rolled hemWithout changing foot or needle plate (manufacturer)
KnifeRetractable — finishes without trimming (manufacturer)
ThreadingColour-coded internal guides, lower looper threading aid
BedFree arm or flat bed
Weight6.6 kg
Warranty3 years (manufacturer)

Questions people actually ask

What does a retractable knife actually change?

It lets you overlock an edge without trimming it. Most of the time you want the knife — it is what makes an overlocked seam neat. But on a piece already cut to size, or where you are finishing a raw edge you cannot afford to narrow, a fixed knife forces you to feed the fabric off-line to dodge it. Being able to fold it away turns a two-person balancing act into a normal seam.

Is differential feed worth paying attention to?

It is the single specification that matters most on an overlocker. It drives the front and rear feed dogs at different rates, so it can stop jersey stretching into a wave as it passes under the foot, or deliberately gather a lightweight fabric. Stepless adjustment, as here, means you can dial it rather than pick from three settings.