Pfaff 645F Owner's Manual - Page 34

over se r ting ve1 ing ire the I show place st for seam excess st for weight feed ig-zag raight D very itches s falls Machine Setting - SLANT OVERLOCK STITCH Presser fool Stitch pattcrn Limit lever Stitch length Fabric feed Stretch stitch foot --- Slant overlock stitch is more flexible than the overlock stitch. Use for knits and stretch fabrics. When using Method I, (see page 31) place stitches so slanted zig-zag stitches fall over edge of fabric. ZIG-ZAG STITCH Zig-zag stitch can be used for overcast ing in more firmly woven fabrics. Trim edges first, then stitch so needle catches outer edge of fabric. (See page 21) Slant Overlock Stitch 3-STEP STRETCH ZIG-ZAG STITCH 3-step stretch zig-zag can be used for overcasting knits, thin easily frayed fabrics which pucker when overcast with ordinary zig-zag, and heavy fabrics. For very loosely woven fabrics, sew two rows of stitching to fasten all the threads. (See pages 23-24) Combining Straight Stitching and Overcasting Overlock and slant overlock stitches can be used to sew narrow seams in garments, replacing both straight stitch ing and overcasting. Use for sports wear, bathing suits, and hand-knitted garments. Use overlock stitch for firmly woven fabrics, and slant overlock stitch for a more elastic seam in knits and stretch fabrics. • For double knits and firmly woven fabrics, trim seam edges to 5mm from seam line. Place fabric under presser foot so straight stitches fall on seamline and zig-zag stitches fall over seam edge. • For bulky knits, lightweight knits that curl, and fabrics that fray easily -stitch seam first, then trim away excess fabric to produce a narrow seam edge. 32 - -