Twin Needle Seam
This seam finish works well on curved or straight seams and equally well on knits and wovens.
I love this finish for any fabric that does not ravel such as boiled wool, wool double knit, vinyl, and faux and real leather because excess seam allowance can be trimmed away after stitching.
Here are some pointers to help you add a special touch to your next project:
- Sew seam and press open.
- Finger press any fabric that is not iron-friendly.
- For knits, hand wind bobbin with woolly nylon thread.
- For other fabrics, use matching thread on the needle and the bobbin.
Twin needles come in several types: stretch, woven and denim. Unless you use the correct twin needle for your fabric, you will get skipped stitches.
- The denim twin needle is good for any dense fabric such as leather, denim or heavy weight fabric.
- The woven twin needle works for other woven fabrics.
- The stretch twin must be used on knits.
Twin needles also vary in the distance between the needles. I prefer the 3.0mm or 4.0mm spacing. After the seam is sewn and pressed open, insert the twin needle and straddle the seam as you sew the parallel rows of stitching.
- If you want a raised effect, tighten the top tension.
- If you want a flat effect, loosen the top tension.
On the wrong side of the fabric, trim seam close to stitching.