Tension Settings: Right Needle Thread Tensions - Bernina Overlocker L 890 Workbook

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TENSION SETTINGS: RIGHT NEEDLE THREAD TENSIONS

Firm fabric such as muslin, 10" x 10"
80/12 ELX705
4 Spools Serger Thread (B, R, G, Y)
4-Thread Overlock Stitch #1)
C 11
Right Needle Tension Too Tight
Top Side
Right Needle Tension Too Loose
Top Side
B E R N I N A O V E R L O C K E R W O R K B O O K
Right Needle Tension Too Tight
1.
2.
Bottom
Side
3.
4.
1.
2.
Bottom
Side
3.
4.
17
Compare your sewn samples to the images in the Stitch
Optimizer and consider the recommended corrective
measure for each issue.
Adjust the right needle tension to the highest setting
of 9.
Fold the fabric in half to 5" x 10" and sew the seam
along the fold, trimming off a slight amount.
Look at the stitch. You might have noticed when you
sewed the seam that the fabric wanted to pucker more.
You might also notice a bit of the lower looper (red
thread) showing up on the edge of the seam. From the
bottom side, you may notice that the left needle thread
is being pulled up.
Label the sample "Right Needle Tension Too Tight".
Right Needle Tension Too Loose
Now adjust the tension setting to the lowest setting of
1 and sew the seam on the opposite side.
Examine the stitch formation. Notice how you can now
see the needle thread making loose loops on the front
and on the back of the fabric.
Label the sample "Right Needle Tension Too Loose".
Touch clr to put the right needle tension setting back to
the default of 4.