A person who hems fabric, or a sewing tool with a curved foot that automatically folds fabric to create a hem.
From 'hem' (to fold and sew the edge of fabric) plus the agent suffix '-er', creating a term for both workers and machines that perform hemming.
Before automatic hemming machines were invented in the 1850s, hemming was one of the most tedious and repetitive tasks in sewing—machines that could do this saved countless hours of hand work!
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