3. Operation
3.1 Needles, threads and gimps
Needles
Needle system: 558 / 579
Needle sizes: Nm 80-120 (558) / Nm 90-125 (579)
according to the type of sewing thread,
fabric and sewing equipment (E-No.).
Attention!
When changing over from one needle system to the other the distance
between looper and needle and the adjustment of the needle
protection have to be checked in any case (see service instructions).
Threads
The look of the buttonhole is essentially influenced by the used sewing
thread.
Threads of synthetic fibre or even s ilk threads can be used as needle
and looper threads.
The look of the buttonhole is essentially influenced by
–
the used thread.
–
the use of different needle and looper thread sizes.
Gimps
The gimp is meant to stabilize the buttonhole and to give it a relief-type
appearance at the same time.
It should have the following features:
–
not too thick, but supple and tight
–
even thickness
The threads mentioned in the following table are recommendations
only. Depending on the sewing equipment (E-No.) and the material
also other threads and thread sizes may be required.
Subclass Type and size of needle Type and size of bottom Type and size of lower
thread thread gimp
559-151000 Poly-Poly 80/2 Poly-Poly 80/2 Poly-Schappe 15/3
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