Sewing Machine Reference Tool by Bernie Tobisch

Author:Bernie Tobisch
Language: eng
Format: epub
Publisher: C&T Publishing

Needle sizes marked on packaging

The first number is a metric measurement of the needle diameter. A size 100 is 1 mm in diameter, size 80 is 0.8 mm, size 70 is 0.7 mm, and so on. This is a very easy to understand system. The second number is an American sizing number. In both numbering systems, as the number increases, the needle gets larger.

The larger the needle, the heavier a thread it can accommodate. The smaller the needle, the finer the thread.

Size of the Needle Hole

Another reason to use the correct size needle for the thread you are using is that the hole left by the needle can create what looks like a tension problem.

If you use a large needle with a fine thread, the thread will not fill the hole, and the loop of bobbin thread is easily seen, even though the tension is properly balanced. The stitches may appear slanted or staggered.

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