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Seam Class | Needle Count | Typical Uses and Stitch Types |
|---|---|---|---|
 |
OSa | 1 to ? | Decorative Stitching using 100cl, 300cl, 400cl or 600cl |
 |
OSb | 1 or 2 | Decorative Stitching using cording Sometimes called "Pin-tuck" with Cording Using 304cl or 406cl stitch |
 |
OSc | 1 or 2 | Decorative Stitching sometimes called "Pin-tuck" Using 304cl or 406cl stitch |
 |
OSd | 2 | Tuck stitching with Cording and Backer using dual 101cl, 301cl, or 401cl stitch |
 |
OSe | 1 | Side Tuck Stitching using 101cl, 301cl, or 401cl stitch |
 |
OSf | 1 | "Stitch-Crease" stitching using 301cl stitch - Also called "Pin-Tuck"
may be repeated |
 |
OSg | 3 | Self-Stripe Trim using 100cl, 300cl, or 400cl stitch |
 |
OSh | 1 | Piping Trim using 100cl, 300cl, or 400cl stitch |
