Subtleties of choosing an industrial overcasting machine

Subtleties of choosing an industrial overcasting machine

Before approaching the choice of a brand and a specific overlock model, it is necessary to determine the class of the overcasting machine. In this regard, all overlocks are divided by the number of threads participating in the process of seam formation, which entails structural differences. Such a division, of course, did not develop yesterday but was the result of a long development of design ideas in the development of sewing equipment with reference to the technology of tailoring certain textile products.

Three-thread models – overlocks that perform a three-thread sewing seam, formed by one needle thread and two threads from the upper and lower loopers. These overcasting machines are used for overcasting sections of materials prone to shedding. As a rule, these are various woven fabrics. Three-thread overlocks are primarily purchased and used at large sewing enterprises, where re-adjustment of overlocks with a large number of threads to a three-thread is not economically feasible. There is also a separate modification of three-thread overlocks for performing a role seam, also called hemming or optic.

Learn more – Rating of the best sewing and embroidery machines for your sewing.

Four-thread models – overlocks performing a four-thread elastic sewing-and-overcast seam, formed by two needle threads and two threads from the upper and lower loopers. These overcasting machines are designed for simultaneous sewing and overcasting of sections of tensile fabrics of knitted weaving. Such overlocks can also be easily reconfigured to a single-needle three-thread edging. In such a setup, these models can perform a wide and narrow three-strand overcast seam. Four-thread overlocks are the best choice for sewing home textiles and knitwear, it is these machines that should be considered as a priority purchase for sewing workshops, ateliers and knitwear production.

Five-thread models – overlocks that perform a five-thread reinforced sewing-and-seam seam, formed by two needle threads and three threads from loopers. These overcasting machines are designed for simultaneous sewing and overcasting of sections of loose woven materials of various weaving. Such overlocks can also be easily reconfigured to a single-needle three-thread edging. In such a setup, these models can perform a wide and narrow three-strand overcast seam. Five-thread overlocks are the best choice for medium and large sewing enterprises engaged in sewing workwear and jeans.

Six-thread models are overlocks capable of performing all the lines of the previously mentioned classes, plus a six-thread line formed by three needle threads and three threads from loopers. These overcasting machines are perhaps the most versatile of all the classes presented, due to the wide range of readjustment options, but at the same time the least popular ones. This is due primarily to the time spent on reconfiguring and refueling machines. Such models will be primarily of interest to professionals engaged in individual sewing and sewing ateliers.

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