The most important concept to understand is the number of threads: machine stitching has two threads, a spool and a bobbin, and they interlock between the layers of fabric. Hand stitching only has one thread in the needle, and it is sometimes atop and sometimes beneath the fabric layers.
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Answer:
The most important concept to understand is the number of threads: machine stitching has two threads, a spool and a bobbin, and they interlock between the layers of fabric. Hand stitching only has one thread in the needle, and it is sometimes atop and sometimes beneath the fabric layers.
Explanation:
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