Bernette Airlock b64 - Thread Control and Differential Feed

Machine settings
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2020-09 EN 5040064.00A.04
6.4 Setting the mtc Micro Thread Control
The mtc Micro Thread Control affects the amount of the Looper Thread around the fabric edge and can be
adjusted continuously while sewing. This feature makes it easy to achieve a well-balanced stitch at any given
Cutting Width.
Prerequisite:
• The Thread Tension is set correctly.
• The knife position is set correctly.
• The mtc Micro Thread Control is set to «−».
• The sewing test has been performed.
> To enlarge the loops of the Looper Thread at the fabric edge, turn the mtc Micro Thread Control in «+»
direction while sewing.
> To minimize the loops of the Looper Thread at the fabric edge, turn the mtc Micro Thread Control in «-»
direction while sewing.