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Technical Manual: Butted Seam
70 Class Machines Cutter Mechanism General Information
UPPER AND LOWER CUTTER
General Information
1) The Upper and Lower
Cutter may be adjusted up and down, and laterally to the right or left.
2) The position of
Cutters determines the width of the fabric within the seam. When a butt seam is
desired, the cutting surfaces should be positioned approximately in the middle
of the Needle Plate Chaining Finger. When a gap seam is desired, the cutting
surfaces should be positioned as for a butt then moved to the left about 1/2
the width of the gap required. Lap seams are created by setting the cutting
surfaces to the right of the butt seam position. The position of the Cutters
will vary with the thickness of fabric. Some trial settings should be made to
determine the correct position for each weight of material. Loosely woven
materials require a wider setting than tight fabrics.
3) The Lower Cutter
Holder slides in the Lower Cutter Holder Support Assembly providing lateral
movement to the Lower Cutter. Do not allow the Lower Cutter to push too tightly
against the Upper Cutter. If more than a light pressure is required, it usually
indicates that the Cutters are dull and should be sharpened.
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17 Glebe Road, Groby, Leicester,
ENGLAND, LE6 0GT
Tel: +44 (0)116 2321779 • Fax: +44 (0)116 287 8099
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