BERNINA International AG Seestrasse 161 CH-8266 Steckborn Schweiz Seite 35 von 172
DRAFT – VERSION
3.9.6 Standard buttonhole (default settings, max. length 20.0 mm)
If the customer complained about the buttonhole, sew it using the
buttonhole foot with slide 3A which came with the machine.
What the buttonhole must look like:
1. Both beads must be the same width and run parallel.
2. Both beads must be the same length.
3. The slit width must be sufficiently wide for cutting a slit between
the beads without damaging the beads.
Criteria
• Is the buttonhole foot 3A calibrated correctly (see SP 6c
)
• Does the bobbin thread show on the right side of the fabric? It
shouldn’t.
• Does no puckering occur? (With thin fabrics, a stabilizer must be
used).
• Is the seam free of skipped stitches?
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