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When sewing the denim, the sewing machine will break the thread, tie the thread, and jump the needle with a thick thread.
- Dec 19, 2018 -

The denim is thickly sewed, which makes it difficult to form the wire loop, and the thick wire cannot be used to locate the wire loop from the hook positioning hook, and the wire is broken, rolled, and jumped. In addition to the above-mentioned thick material type method, there is a difference in this, because the thick wire is mainly used, so that the hook of the hook is processed and repaired during maintenance. Make the thick line come out of the positioning hook. And it is best to choose a hook that is not too worn.