Fabricator Guidebook - Flipbook - Page 29
Advanced Thread Tension Adjustment
Tension changes to the bobbin thread should only be made when upper tension changes alone do
not solve stitch tension problems. In general, bobbin tension requires just about a two-ounce drag on
the thread (similar to what you feel when pulling dental floss off a spool).
For bobbin case adjustments tighten or loosen screw gradually in 1/4 rotation increments (36).
36
E
C
F
D
Knots pulled to top:
1. Decrease upper tension (C)
2. Increase bobbin case tension (D)
Knots visible on bottom:
1. Increase upper tension (E)
2. Decrease bobbin case tension (F)
Material
If adjustments still do not result in proper thread
tension use the thread guides (G) to fine tune
tension (see chart to right).
Thread Guide Position
Light (less tension)
Medium
Heavy (more tension)
Sailrite® Fabricator® Guidebook
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