New brothread Mercerised Cotton Thread Set — 24 Basic Colours, 600M Spools, Low-Lint 50wt

New brothread Multi-Purpose 100% Mercerised Cotton Threads are high-luster, low-lint sewing spools made from extra-long staple cotton, offered in 24 essential colours and 600M (660Y) length for quilting, piecing, serging, hand and machine sewing.

This set of mercerised cotton threads gives you three-ply strength with a smooth, semi-matte finish and reduced lint thanks to gassing and mercerizing processes. Each 50-weight single-ply (actual three-ply equivalent ~30WT/Tex33) spool delivers consistent colourfast performance and a locking base spool that prevents unwinding on the shelf. The thread’s shrinkage closely matches natural fabrics like cotton and linen, reducing puckering after washing and preserving seam appearance.

How does this thread perform on different machines and projects?

The New brothread cotton is versatile across many machines but requires a few setup details for best results. It works well for quilting, light embroidery, piecing and serging, though because it’s thicker than many 40WT threads you may need larger needles and slower stitching speeds to avoid breakage.

• Use needles size 80/12 or larger to accommodate the thicker cotton fibre.
• Reduce machine speed if you notice tension issues or thread breakage.
• For machines without horizontal spool pins, use an upright thread stand to feed from the snapping spool.
• Ideal for piecing and visible topstitching where cotton’s natural look is desired.

Why choose mercerised cotton over polyester or other fibres?

Mercerised cotton undergoes gassing and chemical treatment to create a smoother, stronger, and shinier yarn than untreated cotton. Because its washing shrinkage closely matches natural fabrics, it helps maintain seam stability and reduces post-wash puckering compared with some synthetic threads.

• Smoother surface lowers lint build-up in machines.
• Greater luster and subtle matte finish suit traditional and modern textiles.
• Natural shrinkage compatibility with cotton and linen fabrics minimizes distortion.
• Biodegradable natural fibre option compared with synthetic threads.

What are the spool and handling features I should know about?

Each spool contains 600 meters (660 yards) and features a snapping spool with a locking base to keep loose thread tails from unwinding in storage. The three-ply bonded construction offers reliable strength for most household and studio sewing tasks while remaining easy to see on fabric.

• 600M (660Y) per spool provides long runs without frequent changes.
• Locking base prevents tangles during storage and transport.
• Three-ply bonded yarn balances strength and pliability for hand and machine stitching.
• Recommended upright stand for machines lacking horizontal spool pins.

How should I care for seams sewn with this cotton thread?

Cotton thread responds well to standard laundering for natural-fibre garments and home textiles, with shrinkage behavior similar to cotton fabrics. Avoid overdrying and use moderate heat to keep stitches stable; colorfastness is good when laundered according to fabric care labels.

• Launder following the garment or fabric care instructions to avoid extreme shrinkage.
• Avoid high-heat dryer settings when combining with delicate fabrics.
• Press with appropriate iron temperature for cotton to smooth seams and preserve appearance.
• Test on a scrap when colorfastness is critical for light or pastel fabrics.

Who is this for: New brothread mercerised cotton set is designed for quilters, garment sewists, home-sewing hobbyists and small-batch makers who prefer natural-fibre threads with low lint and a refined finish. It’s particularly suited to anyone working with cotton or linen who wants seam stability after washing, visible topstitching in classic shades, and spools that remain tidy on the shelf.