Bernina 350PE User Manual page 40

Sewing stitches - Buttonholes
40
Automatic Keyhole Buttonhole with Auto-Length
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033301.70.04_1007_B330_B350_B380_EN
Automatic buttonhole foot with slide No. 3A
Automatic keyhole buttonhole
Programming the buttonhole
1. sew the straight stitch forward, stop the sewing computer
press the Quick reverse button
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«auto» and presser foot no. 3A appear on the screen = buttonhole length is
programmed.
2. the sewing computer automatically sews the eye
3. the first bead in reverse
4. straight stitches forwards
5. the second bead in reverse
6. the bartack and securing stitches
the sewing computer stops and returns automatically to buttonhole
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begin
Auto-buttonhole
all subsequent buttonholes will be sewn to exactly the same length (no
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need to press the Quick reverse button)
clear the program by pressing the «clr» button
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the programmed buttonhole can be saved in the long-term memory (refer to
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page 42)
Exact duplicates
The auto function ensures that each buttonhole will be exactly the
same length as the previous one.
Double-sewn keyhole buttonholes
keyhole buttonholes can be sewn twice on thick fabrics - use a
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longer stitch length for the first run
after sewing the first buttonhole, do not move the work
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reduce the stitch length and tap the foot control once to begin
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sewing again