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Engineering

The Hidden Dance of Needle and Thread

Quick fact

A sewing machine forms a lockstitch by passing a needle thread through the fabric and looping it around a bobbin thread, using a rotating hook that catches the needle thread and carries it around the bobbin case, interlocking the two threads in the middle of the fabric.

Why this is interesting

You press a pedal and fabric glides through, but have you ever wondered how a single needle and a tiny bobbin manage to lock two threads together in a perfect stitch, thousands of times a minute, without tangling?

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Subjects · study & training · careers

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The Hidden Dance of Needle and Thread

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