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Perfect stitching, Tension of upper and lower threads should, Be equal, just sufficiently strong to lock – Brother 681B-UG User Manual

Page 18: Both threads in material, Perfect stitching appears flat with no, Puckering of material, Incorrect stitch (a), When the upper thread lies on the surface, Of the material by pulling the lower thread, Up as shown

Perfect stitching, Tension of upper and lower threads should, Be equal, just sufficiently strong to lock | Both threads in material, Perfect stitching appears flat with no, Puckering of material, Incorrect stitch (a), When the upper thread lies on the surface, Of the material by pulling the lower thread, Up as shown | Brother 681B-UG User Manual | Page 18 / 39 Perfect stitching, Tension of upper and lower threads should, Be equal, just sufficiently strong to lock | Both threads in material, Perfect stitching appears flat with no, Puckering of material, Incorrect stitch (a), When the upper thread lies on the surface, Of the material by pulling the lower thread, Up as shown | Brother 681B-UG User Manual | Page 18 / 39