Polyester Threads F.A.Q
Why choose polyester over cotton thread?
Polyester is stronger, more abrasion‑resistant, and less prone to shrinking than cotton, ideal for high‑stress seams, garments, and outdoor projects.
Polyester offers notable advantages: higher strength, abrasion resistance, and reduced shrinkage in laundering. It suits seams under stress, garments, home décor, and outdoor items. WonderFil polyester lines are engineered with smooth, low‑lint finishes for even stitches and easier machine maintenance.
Which WonderFil polyester thread is best for piecing?
DecoBob™ 80wt is the best polyester for piecing. Its ultra‑fine weight reduces seam bulk for flatter, more precise blocks.
DecoBob™ 80wt polyester is the go‑to for quilt piecing. Its matte, ultra‑fine profile eliminates bulk, allowing seams to press flatter and align precisely. It also excels as a bobbin thread for piecing and quilting.
Can I use WonderFil polyester threads for quilting?
Yes. FabuLux™ provides bold, shiny quilting lines; DecoBob™ offers fine, subtle quilting with low bulk.
WonderFil polyester threads perform beautifully in quilting. For decorative impact, FabuLux™ delivers vibrant color and sheen. For blending, DecoBob™ 80wt provides precise quilting lines that sit low in the fabric. Polyester’s strength is ideal for longarm speeds.
Are WonderFil polyester threads safe for high heat ironing?
Use medium heat when ironing polyester. A pressing cloth prevents direct heat contact because polyester melts at lower temperatures than cotton.
Polyester has a lower melting point than cotton, so avoid high heat. Set the iron to medium or lower and use a pressing cloth. This protects stitches from flattening or melting while still letting you press seams effectively.
Is polyester thread good for embroidery?
Yes. Polyfast™ 40wt trilobal polyester is shiny, strong, and colorfast, ideal for embroidery that’s washed often.
Polyester is excellent for embroidery on items that will be laundered or see sunlight. WonderFil’s Polyfast™ 40wt trilobal polyester provides high sheen, colorfast performance, and strong stitch coverage, making it ideal for garments and linens.
Can I use WonderFil polyester thread in the bobbin?
Yes. Fine polyesters like DecoBob™ and InvisaFil™ are strong, smooth bobbin choices that reduce bulk in dense quilting or embroidery.
DecoBob™ 80wt and InvisaFil™ 100wt are excellent bobbin threads. Their fine profiles allow longer bobbin runs and less bulk in dense stitching while maintaining strength and tension balance.
Is WonderFil polyester thread UV resistant?
Yes. Many WonderFil polyester lines resist fading from sunlight better than cotton, good for outdoor or high‑exposure projects.
Polyester fibers generally resist UV damage better than cotton, making WonderFil polyester a smart choice for outdoor cushions, bags, or décor. While specifics vary by line, most polyesters maintain color longer in bright conditions.
Which WonderFil polyester thread is the shiniest?
FabuLux™ and Polyfast™ are the shiniest, trilobal filaments reflect light so colors pop in embroidery and decorative quilting.
FabuLux™ and Polyfast™ are engineered for high sheen. Their trilobal filaments reflect more light, making stitches luminous, perfect for embroidery, decorative quilting, and any project where color vibrancy matters.
Can I use polyester thread for garments?
Yes. Polyester is strong, flexible, and withstands frequent washing. Use DecoBob™ for lightweight fabrics; heavier polyesters suit denim and outerwear.
Polyester is ideal for clothing because it combines strength with slight flexibility, tolerates frequent washing, and resists abrasion. DecoBob™ 80wt suits fine fabrics; heavier polyesters handle denim, canvas, and outerwear.
How do I prevent tension issues with polyester thread?
Use the right needle, slightly loosen top tension, and ensure the thread is seated in the tension disks. Polyester’s smooth finish can slip.
Because polyester is smoother than cotton, it may need minor setup changes. Choose the correct needle size, slightly reduce top tension, and ensure the thread sits fully in the tension disks. Test on scrap to fine‑tune balance.