Selection of machines
Close trousers side seams, with vent at the hem - open seam.
Result
Single needle two thread-chainstitch machine with thread trimmer, stitch condensing, sewing food lift and integrated sewing drive
Single needle two thread-chainstitch machine with top puller feed, thread trimmer and integrated sewing drive
Single-needle 2-thread chainstitch machine with bottom feed and differential foot top feed
