{"product_id":"simthread-upholstery-repair-thread-12wt-250yd-bonded-polyester-uv-resistant-heavy-duty","title":"Simthread Upholstery Repair Thread 12WT 229 m — Bonded Polyester, UV-Resistant Heavy-Duty","description":"\u003cp\u003e\u003cstrong\u003eSimthread Strong Upholstery Repair Thread is a bonded 12WT polyester sewing thread made for heavy-duty indoor and outdoor repairs, offering UV resistance and smooth, lint-free performance for hand or machine use.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for demanding upholstery, marine, and outdoor textile projects, this bonded polyester thread blends tensile strength with weather-resistant finishing so seams hold up under sun, wind, and frequent use. Each 250-yard snap spool is manufactured with a tight filament structure and bonding process that reduces fray, eliminates joints, and feeds cleanly through needles and machine tensioners. Simthread’s formulation aims to give professional results when repairing furniture, cushions, awnings, sails, or automotive interiors.\u003c\/p\u003e\n\n\u003ch3\u003eHow strong and weather-resistant is this thread?\u003c\/h3\u003e\n\u003cp\u003eThe thread is a 12-weight bonded polyester (finished TEX 90), engineered to resist UV-related strength loss better than standard polyester filament threads. Bonding and filament construction increase abrasion resistance and reduce linting for longer-lasting seams exposed to the elements.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFinished size: 12WT (TEX 90) with raw filament TEX 69 before processing\u003c\/li\u003e\n  \u003cli\u003eEngineered bonding reduces breakage and fraying\u003c\/li\u003e\n  \u003cli\u003eImproved UV resistance and colorfastness for outdoor exposure\u003c\/li\u003e\n  \u003cli\u003eLint-free and joint-free for consistent sewing performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I use it with home sewing machines and hand-sewing?\u003c\/h3\u003e\n\u003cp\u003eYes — Simthread 12WT is compatible with most domestic and industrial machines when paired with machine needles size 16 or 18. Hand sewing also works well using the recommended hand needle sizes to match the thread thickness.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRecommended machine needle sizes: 16 or 18\u003c\/li\u003e\n  \u003cli\u003eRecommended hand needles: sizes 1–5 for easier passage through heavy fabric\u003c\/li\u003e\n  \u003cli\u003e250-yard snap spool format fits many thread holders and storage setups\u003c\/li\u003e\n  \u003cli\u003eNo joints or loose fibres means fewer skipped stitches and jams\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat projects is this thread best suited for?\u003c\/h3\u003e\n\u003cp\u003eThis heavy-duty thread is formulated for robust textiles where seam strength and weather resistance matter, such as outdoor cushions, grill covers, awnings, tents, sails, and automotive upholstering. It performs well on both natural and synthetic heavy fabrics including canvas, vinyl, Sunbrella-type materials, and heavy woven upholstery fabrics.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePatio and outdoor furniture cushions, pillows, and covers\u003c\/li\u003e\n  \u003cli\u003eAwnings, sails, tents, and marine upholstery\u003c\/li\u003e\n  \u003cli\u003eAutomotive and RV seat repairs and trim work\u003c\/li\u003e\n  \u003cli\u003eCanvas work and heavy-duty upholstery repairs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat comes in the package and colour options?\u003c\/h3\u003e\n\u003cp\u003eEach product listing represents a single 250-yard snap spool sold individually; kits with multiple colours are available separately. Spools are offered in a range of colours to match common upholstery shades, and some sets include sewing needles and a seam ripper when sold as a kit.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSingle spool: 250 yards per snap spool\u003c\/li\u003e\n  \u003cli\u003eSold colour-by-colour; some multi-colour kits include needles and a seam ripper\u003c\/li\u003e\n  \u003cli\u003eEight colour options commonly offered for matching upholstery tones\u003c\/li\u003e\n  \u003cli\u003eColours are treated for UV resistance and colorfastness\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this product for? Simthread Strong Upholstery Repair Thread is aimed at DIYers, professional upholsterers, marine technicians, and outdoor gear repairers who need a durable, weather-ready thread for heavy fabrics. If you work on patio furniture, automotive interiors, sails, tents, or any project exposed to sun and abrasion, this bonded 12WT polyester spool provides a reliable, low-lint option that feeds smoothly through machines and hand needles alike.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is Simthread suitable for outdoor cushions and awnings?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The bonded 12WT polyester is UV-resistant and colourfast, designed for outdoor upholstery like cushions, awnings, and grill covers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What needle sizes should I use with this thread?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Use machine needles size 16 or 18; for hand sewing, choose needle sizes 1–5 for best performance.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Simthread","offers":[{"title":"Default Title","offer_id":55297887109457,"sku":"B0CGV1ZXVF","price":58.94,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1086\/5567\/3681\/files\/simthread-front-spool.jpg?v=1791960561","url":"https:\/\/craftiche.co.uk\/products\/simthread-upholstery-repair-thread-12wt-250yd-bonded-polyester-uv-resistant-heavy-duty","provider":"Craftiche","version":"1.0","type":"link"}