1. When sewing heads, attention must be paid to the formation of a smooth cloth surface, uniform stitching without missing stitches, skipping stitches and leaks, and checking whether the fabric specifications are consistent with the front and back sides. If the open cut askew. You must tear off the skewed cloth head after the seam to prevent curling, purlin, and weft. This is especially effective in overcoming the weft of thin fabrics. To effectively prevent curling, 1~2m away from the edge of the fabric should be encrypted, it is best to add sewing triangles on both sides of the seam.
2, when sewing head, thin fabric stitch density of 40-45 pin / 10 cm, the general fabric is 35-40 pin / 10 cm, thick fabric is 30-35 pin / 10 cm. The length of the two edges of the seam is 2-3 cm, otherwise it will pull the edge.
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