Bernina 530 User Manual page 25

Sewing preparation
24
needles, threads
correct needle/thread combination
When sewing, the thread should travel smoothly down the long groove on the
front of the needle.
too thin thread or too thick needle
The thread has too much clearance in the long groove. Skipped stitches and
damage to the thread can occur.
too thick thread or too fine needle
The thread rubs on the edges of the long groove and can get jammed. This
can cause thread breakage.
Guidelines
Material and thread
Light materials:
Fine thread (darning thread, embroidery thread)
Medium materials:
Sewing thread
Heavy materials:
Sewing thread (quilting thread, topstitching)
130/705 H-S/70
1 130 Shank length
2
2 705 Flat shank
3 H
Needle scarf
1
4 S
Needle point (here e.g. medium ball point)
5 70
Needle size (shank diameter)
5
3
4
033471.52.04_2014-02_Manual_B530_550_EN
Needle size
70-75
80-90
100, 110, 120