Jack T1790G

Electronic Lockstitch Buttonholing Machine


Computerized Buttonhole Machine, Semi-Dry Head to ensure clean seams. Multiple cut function, different types of buttonholes available. Cooling system to extend the life of the machine.

T1790G Features:

  • Touch Screen Control Panel
  • Direct Drive AC Servo Motor
  • Adjustable Sewing Speed
  • 30 Pre-Programmed Buttonhole Patterns
  • 200 User Programmable Buttonhole Patterns
  • Multi-Cut Programmable Knife
  • Purl or Whip Buttonhole Stitch
  • Automatic Foot Lifter
  • Automatic Thread Trimmer, Improved
  • Electronic Adjustable Thread Tension
  • Semi-Dry Lubrication System
  • Integrated Bobbin Winder
  • Integrated Adjustable LED
  • Complete with Table and Stand
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Touch Screen Panel

The software allows you to design buttonholes and program their repetition, you will find 31 pre-installed sewing motifs and up to 500 total motifs, in addition the USB port allows the import of designs, software updates and recharging / powering external devices.


Integrated Control Box

Small and compact without external wires allows easy installation and simple transport.


Step Motor

The fabric feed, the movement of the needle and the knife for cutting the buttonhole are controlled by a built-in stepper motor, making the sewing process more precise and quiet without vibration, saving energy.

Semi-Dry Head

No oil, no head and semi-dry hook to avoid dirtying the material.


Integrated Fan

The cooling fan can greatly reduce the temperature and extend the life of the machine.



Possibility to baste the buttonhole, it is especially useful in stretch fabrics.

Multi-Cut And Continuous Sewing

The multi-cut allows you to cut long buttonholes without changing the knife, while the continuous sewing allows you to make multiple buttonholes in a row or 120mm buttonholes in the 1792 model.


Electronic Tension

Set different tensions for each edge of the buttonhole and save them in 2 different presets, preventing the thread from coming off or breaking. Also excellent for those who want to obtain effects with two-color yarn.


Advanced Automatic Bobbin Winder

A knife has been added that allows you to cut the thread quickly and to hold the thread once cut, so that it is always ready.


For Knitwear (K)

Subclass for knitwear and stretch fabrics with dedicated convex plate and arched foot to reduce the possibility of thread breakage.


Short Thread (X)

Suitable for sewing buttonholes on light fabrics such as shirts. The remaining wire is 2.5 mm, this allows you to avoid wasting time and money with manual cutting. (optional)

Bobbin End Detection (F13)

An alarm warns you in time to change the bobbin and the machine stops automatically before the lower thread runs out so as not to ruin the work. Air is needed to keep the sensor clean. (optional)

Industry 4,0

Thanks to the integrated WIFI module you can modify the parameters and control the productivity of the machine directly from the application. NB: a Jack gateway must be purchased for every 50 machines