Page 205 - CTS - Sewing Technology - TP - Volume - 2-0

SEWING TECHNOLOGY - CITS

Step 1
Take the square piece of fabric. Cut it into two pieces by diagonally cutting it. You have two triangles now.

Step 2
Join them by short sides (not the diagonal sides)
Step 3
Open it up and press the seam allowance open. Mark the bias strips all along the width.
Step 4

Now join the short sides, right sides together. One end would not meet
Step 5
Start cutting the bias tape strips from one end (the extended, not stitched end). Go on cutting until the end and
get this long strip of bias binding tape.

Sewing needles

Objectives: At the end of this exercise, you shall be able to:
• identify the parts and function of the sewing machine needle
• choose the right needle for the fabric
• analyse the different types of sewing machine needles:

A sewing machine needle is designed to be inserted into a sewing machine. It has a pointed tip with a hole
through which to insert thread, and a blunt top with a rounded front and flat back. It is inserted into a screw in the
machine and held tight.
The Needle which is 2” piece of steel, is one of the most important parts of sewing machine. The sewing machine
cannot operate without a needle. If you insert it wrong, and your machine will not work. Use an incorrect needle
and your stitches will be less than desirable. Use a dull or bent needle and you risk damaging your machine,
fabric and thread. (Fig 1)

Fig 1

Needle parts and their important functions:
1 Butt: The very top of your needle has a beveled edge for easier insertion into your machine.

2 Shank: Home sewing needles have a flat shank for perfect positioning in the needle bar in relation to the hook.
3 Shoulder: The area between the shank and the blade.
4 Blade: The length of the needle. Needle size is determined by measuring the blade diameter.
5 Groove: Cradles and guides thread to the eye of the needle.
6 Scarf: The indentation above the eye that allows the bobbin hook to smoothly grab the thread under the throat
plate to create a stitch.

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CITS : Apparel - Sewing Technology - Exercise 34