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Hemming and seaming are two similar metalworking processes in which a sheet metal edge is rolled over onto itself. Hemming is the process in which the edge is rolled flush to itself, while a seam joins the edges of two materials.
Hem detail with inscriptions, Saint-John in Crucifixion, Ferrara, by Vicino da Ferrara (1469–70). A hem in sewing is a garment finishing method, where the edge of a piece of cloth is folded and sewn to prevent unravelling of the fabric and to adjust the length of the piece in garments, such as at the end of the sleeve or the bottom of the garment.
Overcast stitch – used to enclose a raw, or unfinished, seam or edge; Pad stitch – secures two or more layers of fabric together and provide firmness; Pick stitch – hand stitch that catches only a few threads on the wrong side of the fabric, difficult to produce nicely so typically used for hemming high quality garments
A Hong Kong seam or Hong Kong finish is a home sewing term [8] for a type of bound seam in which each raw edge of the seam allowance is separately encased in a fabric binding. [9] In couture sewing or tailoring , the binding is usually a bias -cut strip of lightweight lining fabric; in home sewing, commercial bias tape is often used.
Hemming presses are widely used in automotive manufacturing for the hemming of sheet-metal body components. The process uses traditional hydraulically operated ‘stamping presses’ to hem closure parts, and, being the last forming process in stamping, it largely determines the external quality of such automotive parts as doors, hoods, and trunk lids.
The whip stitch is often used in applique making, closing the sides of pillows and cushions, hemming jeans, attaching crocheted amigurumi toys together as it produces a neat seam, and in leather lacing [2] as a decorative stitch in leather garments and accessories.
This is an accepted version of this page This is the latest accepted revision, reviewed on 28 January 2025. Manufacturing processes This section does not cite any sources.
wetting back- semi-processed leather is rehydrated. sammying - 45-55%(m/m) water is squeezed out the leather. splitting - the leather is split into one or more horizontal layers. shaving - the leather is thinned using a machine which cuts leather fibres off. neutralisation - the pH of the leather is adjusted to a value between 4.5 and 6.5.
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