Thread WEights
30wt and 50wt refer to the thread’s weight, specifically its thickness. A lower number like 30wt indicates a thicker, heavier thread. A higher number like 50wt indicates a thinner, lighter thread.
This means 30wt thread will be more visible, and create a bolder stitch. 50wt thread will be less noticeable and create a more delicate stitch.
An easy way to remember which is thicker is “thirty is thicker” and “fifty is finer”.
organic cotton thread
30 WEIGHT
Ideal uses by hand: Quilting, Applique, Paper Piecing, Visible Mending, Basting Stitches
Ideal uses by machine: Long Arm Quilting, Free Motion Quilting, Top Stitching, Decorative Machine Stitches, Overlocking
Recommended machine needle: US 10-14 / NM 70-90 | Recommended bobbin thread: 50wt Scanfil Organics
organic cotton thread
50 WEIGHT
Ideal uses by hand: Heirloom Sewing, Quilting, English Paper Piecing, Quilting Binding
Ideal uses by machine: Construction Seams, Quilting Piecing and Binding, Decorative Machine Stitches, Foundation Piecing, Bobbin Fill, Appliqué, Overlocking
Recommended machine needle: US 12-14 / NM 80-90 | Recommended bobbin thread: 50wt Scanfil Organics