Specific darning steps (* * * eight steps):
1, check the jeans for damage.
2. Choose cotton thread with similar color to jeans.
3. Set up a sewing machine and install cotton thread.
4. Trim the broken or worn warp.
5. Straighten the surface of the cloth to ensure that there are no folds near the perforation.
6. Sew serrated stitches to reproduce the broken warp.
7. Continue sewing several times from top to bottom until the perforation is covered.
8、? The repair is completed, and the front and back are aligned as shown below.