You (likely) don't understand how a sewing machine works

A video on YouTube. In Science & Engineering, a Krater category.

Summary by Krater

This video explains the mechanical history of the sewing machine, examining how needle position, loop creation, thread tension, and fabric feeding mechanisms evolved to solve the fundamental sewing paradox.

From the video

Answers: How does a sewing machine work?

sewing machine mechanism
lockstitch history
looper and shuttle mechanism
feed dog history

What it concludes

Moving the needle's eye next to the sharp tip solves the problem of fabric friction by preventing the thread from pulling out.
Tangling the thread beneath the fabric creates a secure lockstitch that prevents unraveling.
Isaac Singer optimized production and offered installment payment plans, drastically lowering sewing machine prices and popularizing them for home use.

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