Silvercrest SON 90 A1 User Manual download pdf (Page 23)

- 21 -

2-thread overcast chain stitch (overlock)

Figure 53 shows you the stitch pattern for this stitch.

This stitch with a needle and 2 threads is used for tidying the edges of

light or stretchy fabrics. By changing the needle position you can obtain a

narrow or a wide overcast seam.

Adjust the thread tension selectors r t z u to the appropriate values

(see table) then sew a test seam on the material being used.

For this type of stitch insert the upper looper element in the upper looper o.

Should the lower looper yarn appear to be too tight or the needle thread

too loose (Fig. 54) :

• turn the thread tension selector for the lower looper thread u (yellow)

to a lower number, or ...

• turn the thread tension selector for the needle (blue r or green t) to

a higher number.

Should the lower looper yarn appear to be too loose (Fig. 55), turn the

thread tension selector for the lower looper thread u (yellow) to a higher

number.

Needle position

Seam width switch

Stitch length

2 - 4

Upper looper element

insert

Textiles

Tensioning the thread

blue green red yellow

light

material

2.0 -

Inserting the

upper looper

element

medium-

weight

material

2.5 -

Inserting the

upper looper

element

heavy

material

3.5 -

Inserting the

upper looper

element

0.5

Textiles

Tensioning the thread

blue green red yellow

light material

- 1.5

Inserting the

upper looper

element

0.5

medium-

weight

material

- 1.5

Inserting the

upper looper

element

0.5

heavy

material

- 3.0

Inserting the

upper looper

element

1.5

Top

Underside

Correct thread tension

Incorrect thread tension

needle thread

Top

Underside

needle thread

lower looper thread

Top

Underside

needle thread

lower looper thread

Fig. 53

Fig. 54

Fig. 55

IB_64780_SON 90 A1_LB6 08.03.2011 17:22 Uhr Seite 21

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 37 38

Comments to this Manuals

No comments

Silvercrest SON 90 A1 User Manual Page 23

Comments to this Manuals

Related products and manuals for Sewing machines Silvercrest SON 90 A1