Hema 80.06.0018 Manual De Instrucciones página 37

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2. If the bottom threading looks like a straight line (Fig.B), which indicates the top thread is too loose. Please
turn upper thread tension dial to direction with bigger number to increase pressure until the stitching
returns to normal.
3. If the top thread looks like a straight line (Fig.C), which indicates an over-tight top thread. Please turn the
upper thread tension dial to the direction with smaller number to reduce pressure until the stitching back
to normal.
APPLICABLE CLOTH FOR SEWING
Sewing
Cloth
Presentation
Fabric
specification
Regular
Thick
Thin
Hard
Soft
Sewing effective:
√:means easy to sew
×:means difficult to sew
△:means not smooth to sew
Note:
1. The definition of the fabric thickness:
Thin (fabric): two layers of the fabric thickness < 0.35mm;
Thick (fabric): two layers of the fabric thickness > 0.8mm;
Regular (fabric): two layers of the fabric thickness ≥ 0.35mm and ≤ 0.8mm.
2. The definition of elastic cloth:
If the cloth, which size is "100mm x 30mm", is extending to over 106mm under 0.5KG tension force, then
the cloth is defined elastic, otherwise it is inelastic.
3. Hard fabric: such as Jeans, fine canvas, etc.
4. Soft fabric: such as towel, duster, etc.
Cotton/Linen
Silk/Wool
×
×
×
×
×
- 36 -
Fig.A
Fig.B
Fig.C
Polyester
×
×
Elastic
×
×

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