SINGER 1050 - Manual (Page 30)

Tension Test
To help understand the effect of tension on fabric and thread,
try this simple test:
• Take two pieces of a medium weight woven fabric in a solid
light colour about 15 cm (six inches) long.
• Place a 2020 size 14 needle in the machine.
• Thread the top of your machine with a polyester or mer­
cerized dark colour thread and use a lighter colour thread
of the same fibre and size in the bobbin.
• Select straight stitch.
• Seam the two pieces of fabric together starting with the
upper tension control at 0. Then as you sew, slowly turn the
tension control from 0 through 9.
• Sew another row turning the dial back to 0. You should
have a balanced stitch on each row mid-way between the
start and finish in each case.
• The different coloured threads will help you to see the
effect that the tension has on the upper and lower threads.
Now that you have observed the effects of tension, we suggest
that you perform a similar test on a scrap of the fabric you
plan to use, being sure to duplicate the number of thicknesses
of your garment.
Lower Thread Tension
The lower thread tension has been set at the factory for most
types of stitching. However, for
fine fabrics, we recommend
reducing lower thread tension by turning screw A counter­
clockwise as far as possible, using the small screwdriver from
accessories.
When stitching is completed, be sure to turn screw A clock­
wise back to its position for regular sewing.
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