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Bobbin Threads

Empty Bobbins

Prewound Bobbins

Bottom Line

Kimono Silk 

MasterPiece

MonoPoly

OMNI

So Fine! #50

The Bottom Line Color Card
MasterPiece Color CardSo Fine! #50 Color Card
Bobbin Threads by Superior Threads

Below are the threads we recommend for bobbin use.  They can be used both in the top and in the bobbin.  It is absolutely OK to run a polyester thread on top and a cotton thread in the bobbin as well as stitching with a heavier thread in the top and a finer thread in the bobbin.  Fiber and Weight choices are personal preference and largely depend on the desired overall appearance of the project.

Bottom Line

  • 60 wt. 2-ply lint-free filament polyester.
  • Available in 55 colors.
  • Ideal for hand and machine applique, detail quilting, embroidery, stitch-in-the-ditch, bobbin thread, trapunto, binding, free standing lace, heirloom sewing, serger, and garment construction.
  • Several colors blend into fabrics so well that they appear invisible.
  • Wonderful thread choice for micro stippling.

Kimono Silk

  • #100 Japanese filament silk.
  • Available in 80 colors.
  • Ideal for hand and invisible machine appliqué, detail quilting, and bobbin thread.
  • Can be used for apparel where silk thread is preferred.
  • Because Kimono Silk is so fine, it seams to disappear into the fabric.
  • Size A (.16mm in diameter).

MasterPiece

  • #50 Egyptian-grown extra-long staple cotton.
  • Available in 75 solid colors.
  • Nature's finest thread.
  • Precision designed for piecing.
  • Ideal for appliqué, detail quilting, bobbin thread, and lacework.
  • Very smooth with virtually no lint.

MonoPoly 

  • Invisible polyester monofilament thread.
  • Available in 2 colors, clear and smoke.
  • Use MonoPoly for invisible appliqué, quilting, bobbin, and apparel.
  • Reduced-sheen invisible thread.
  • Very fine size.
  • Iron and dryer safe (medium heat).
  • Will not become brittle over time (nylon monofilament thread tends to go brittle).
  • Will not discolor (nylon monofilament thread tends to "yellow" over time).
  • Strong with low stretch

OMNI

  • Tex 30 (approx. 40 wt.) poly-wrapped poly core thread designed for longarm machine quilting and high-quality apparel and clothing construction. 
  • Available in 172 solid colors. 
  • Cleaner, brighter, and stronger than other Tex 30 poly-wrapped poly core and spun polyester threads.
  • OMNI is designed to withstand high-speed applications and can be used in the needle and in the bobbin.
  • Construction is 100% poly, filament poly core wrapped with a spun poly outer layer.

So Fine! #50

  • #50/3 lint-free filament polyester.
  • Available in 134 colors.
  • Ideal for quilting, general sewing, clothing construction, bobbin thread and serger.
  • No slubs. No lint buildup.
  • Smooth, even twist.

Recommended Needle and Tension Settings

Please see the thread-specific information for needles and tension in our Thread Reference Guides.