Janome DC 3050 - Manual (Page 26)

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Altering the buttonhole width
Press the mode key to activate the stitch width
adjustment.
Press the plus (+) key to increase the buttonhole
width.
Press the minus (–) key to decrease the buttonhole
width.
q Narrower buttonhole
w Wider buttonhole
* The width can be altered between 2.5 and 7.0.
Altering the buttonhole stitch density
Press the mode key to activate the stitch length
adjustment.
Press the plus (+) key to make the stitch sparser.
Press the minus (–) key to make the stitch denser.
* The stitch density can be altered between 0.2 and
0.8.
NOTE:
The indicator shows the stitch width or density while
sewing. When the buttonhole is completed, the
indicator will show the pattern number .
q w
Double layer buttonhole
To make a solid and sturdy buttonhole, sew another
layer of buttonhole over the previous stitches.
After the buttonhole is finished, simply start the
machine again.
Do not raise the foot or buttonhole lever.
The machine will sew another buttonhole in the
following order and stop automatically when it is
completed:
Step 1: Straight stitching in reverse to go back to the
starting point
Step 2: Front bartack and left row
Step 3: Right row
Step 4: Back bartack and locking stitches at the end
The machine will stop automatically.
NOTE:
A double layer buttonhole can be sewn when the dot
is blinking.
Step-1
Step-2
Step-3
Step-4