{"product_id":"sunlu-petg-filament-refill-1-75mm-4kg-high-speed-matte-petg","title":"SUNLU PETG Filament Refill 1.75mm 4KG - High Speed Matte PETG","description":"\u003cp\u003eIn this review the SUNLU PETG Filament Refill 1.75mm 4KG is evaluated for makers who want a no-spool, high speed PETG option for FDM printers. The core reason to consider it is simple: it combines PETG toughness with a refill format that reduces plastic waste while remaining compatible with many popular spools and AMS systems. For those who prioritize durability and impact resistance for functional parts, this refill bundle aims to deliver consistent print quality and faster throughput when paired with the recommended temperature and speed ranges.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Compatibility:\u003c\/strong\u003e Works with SUNLU 2025 new spool, Bambu Lab spools and most FDM printers including AMS and AMS Lite, simplifying integration into existing setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy To Install:\u003c\/strong\u003e The reusable SUNLU 3rd spools are clearly marked and designed to snap into place so even newcomers can load filament without fuss.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLess Plastic:\u003c\/strong\u003e Refill rolls eliminate the need for full disposable spools, reducing plastic waste and lowering environmental impact across multiple prints.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Speed Printing:\u003c\/strong\u003e Engineered for rapid melting and smooth flow, the filament supports print speeds up to 600mm\/s when using the advised higher nozzle temperatures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePLA and ABS Benefits:\u003c\/strong\u003e Delivers PLA-like ease of printing with stronger, more durable performance similar to ABS for functional parts that need toughness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Toughness:\u003c\/strong\u003e Offers high impact strength for parts that must withstand bumps and drops without cracking.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe SUNLU PETG refill is best for hobbyists and small shops that print functional prototypes, brackets, or durable enclosures and want to cut down spool waste while maintaining good print speed and strength. It is also suited to users of Bambu Lab printers and SUNLU 2025 spools who need an affordable bulk option in multiple colors.\u003c\/p\u003e\n\u003cp\u003eUsers who rely on a different SUNLU detachable spool system should check compatibility before buying, and those who require perfectly wound, full-size spools for certain spool holders may prefer traditional spooled filament. Winding quality and spool fit received mixed feedback, so a test run is advisable for new setups.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGood filament quality with reliable print performance and strong impact resistance for functional parts.\u003c\/li\u003e\n\u003cli\u003eLower plastic waste through a refill system that pairs with reusable SUNLU 3rd spools.\u003c\/li\u003e\n\u003cli\u003eSupports a wide speed range with recommended temperature profiles for different print speeds.\u003c\/li\u003e\n\u003cli\u003eBroad compatibility with Bambu Lab and many FDM printers and AMS systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSpool fit and winding quality are mixed according to customers; some report half-spool sizing that may not seat correctly in all holders.\u003c\/li\u003e\n\u003cli\u003eNot compatible with older SUNLU 2nd detachable spools, so buyer must confirm spool version before purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePETG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e1.75mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Weight\u003c\/td\u003e\n\u003ctd\u003e4KG (4 x 1KG rolls)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eSUNLU 2025 spool, Bambu Lab spool, most FDM printers, AMS and AMS Lite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Print Temp\u003c\/td\u003e\n\u003ctd\u003e205-270C (varies by print speed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Bed Temp\u003c\/td\u003e\n\u003ctd\u003e70-80C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrint Speed Range\u003c\/td\u003e\n\u003ctd\u003e30mm\/s to 600mm\/s (see recommended temp mapping)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe SUNLU PETG Filament Refill 1.75mm 4KG is a practical choice for makers who want durable, impact resistant prints while reducing spool waste. It offers strong compatibility with modern reusable spools and good value for bulk purchasers, though buyers should confirm spool fit and accept that winding quality can vary. Overall it is a solid, cost-effective PETG refill for functional printing and faster workflows.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this fit my Bambu Lab spool?\u003c\/strong\u003e\u003cbr\u003eYes, the refill is explicitly compatible with Bambu Lab spools, but verify your spool style since some older or third-party holders may differ.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat nozzle and bed temperatures should I use?\u003c\/strong\u003e\u003cbr\u003eUse 205-215C for 50-100mm\/s, 240-250C for 100-300mm\/s, and 260-270C for 300-600mm\/s with a bed at 70-80C; adjust by speed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre these full spools or refill rolls?\u003c\/strong\u003e\u003cbr\u003eThese are no-spool refill rolls intended for use with reusable SUNLU 3rd spools; they reduce plastic but require a compatible spool system.\u003c\/p\u003e","brand":"SUNLU","offers":[{"title":"Default Title","offer_id":48663919329499,"sku":"B0FCF11L7Q","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71jX8eCXGBL._AC_SL1500.jpg?v=1778678908","url":"https:\/\/gearmusthave.com\/products\/sunlu-petg-filament-refill-1-75mm-4kg-high-speed-matte-petg","provider":"GearMustHave","version":"1.0","type":"link"}