Where Bartack stitch is used?
The Bartack Stitch is used for reinforcing areas of a garment that are subject to stress, such as belt loops and pockets.
Why is bar tack sewing machine used in trouser stitching?
Bartack stitch is made to reinforce the seam and garment component. Like in belt loop joining and at the bottom of side pocket opening bartaking is done.
What is a overlock stitch?
An overlock is a kind of stitch that sews over the edge of one or two pieces of cloth for edging, hemming, or seaming. Usually an overlock sewing machine will cut the edges of the cloth as they are fed through (such machines being called sergers in North America), though some are made without cutters.