Blocking line

Plug line is the line under the needle plate knot ball, plug pinhole, the result is broken line.

1. The gap gap between positioning hook and shuttle frame is unreasonable.Readjust.

2, embroidery is too thin or too loose, needle plate hole is too big.Pad two or three layers of non-woven paper.

3. The thread fails.Check the thread.

4. The bottom line is too loose and the exit direction is wrong.Adjust the bottom line.

5. There is debris or deformation in the shuttle shell, which causes the shuttle core to rotate unsmoothly and easily break the bottom line.