Cotton thread is traditional for quilting but polyester thread is the better option for rag quilting. There’s why:

🧵 Stronger & More Durable
Rag quilts go through a lot, snipping, fraying, washing, and tumble drying (sometimes many times over). Polyester thread is much stronger than cotton and less likely to snap under pressure, especially at the vulnerable seam intersections.
✨Tip: backstitch over the seam intersections for extra strength.
🧵 Less Breakage, Fewer Repairs
Because it’s more resilient, polyester thread holds up better over time. That means fewer broken stitches, fewer gaps in your quilt, and no need to go back and repair seams after washing.
🧵 Handles Friction & Moisture Better
Rag quilts are designed to be used and loved so that means regular washing. Polyester thread doesn’t absorb moisture the same way cotton does, so it doesn’t weaken as quickly and it handles the rough tumble of the dryer with ease.
🧵 Still Soft
Modern polyester threads are soft and smooth so perfect for a snuggly, soft rag quilt. They don’t feel scratchy or stiff, and they blend well into cotton fabrics.
If you’ve had seams open up after washing or fluff that pulls the stitching loose, switching to polyester thread might just save your next quilt.
✨ Tip: Look for a high-quality, all-purpose polyester thread, not the shiny embroidery kind, for best results. I use Gutermann 100% polyester thread. I have no affiliation, but like my Heritage snips it’s a must have in my sewing room. R x
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