Bernina Bernette 334D 4-thread Overlocker



The faceplate, fly wheel and knobs are plastic; the main body is all cast metal, which gives excellent stability in use.

The 334D takes normal sewing needles, which is useful.

It has differential feed, adjustable foot pressure and cutting width is adjusted by a knob to the right and beneath the edge of the cloth plate.

Stitch length and differential feed are adjusted by knobs on the right hand side of the machine and subject to the usual tweaks and trial runs I have achieved extremely good results on both heavyweight and light, dress-weight cottons. All in all it is an extremely amiable machine; a pleasure to use.


Stitch length is between 0.8 and 4mm. Seam width is between 3 and 7mm on 3-thread and 5 and 7mm on 4 thread overlock. It sews at up to 1500 spm. Dimensions are 300W x 325D x 300H mm. It weighs 16lb (7.5kg).


Bernina Bernette 334D

Colour photo showing the colour coded thread paths and diagrams which make this such an easy machine to thread up.

Copyright of the blog owner 2010

3 Comments (+add yours?)

  1. Vlierbloesem
    Aug 07, 2018 @ 11:25:24

    I have the same machine, bought a long time ago, after 1983 and before 2000. But I cannot remember just what year it was. When was the Bernette 334D new?


    • Offspring
      Aug 07, 2018 @ 11:52:16

      Hi, Vlierbloesem, I wish I knew! I’d sort of figured maybe mid-1980s but that’s just a gut feeling based on the build reminding me of similarly-sturdy machines I bought new around that time. From the 1990s forward, plastic seemed to be used a lot more. I looked on the manual, hoping that there would maybe be a copyright or publication date to give me a clue but I’m afraid there’s nothing! 🙂


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