{"product_id":"sunlu-refill-petg-filament-1-75mm-4-pack-durable-petg-refills","title":"SUNLU Refill PETG Filament 1.75mm 4-Pack - Durable PETG Refills","description":"\u003cp\u003eIn this review the SUNLU Refill PETG Filament 1.75mm 4-pack is assessed for makers who already own reusable spools and want a cost-effective, reliable PETG option. The biggest reason to consider these refills is straightforward: they deliver PETG toughness and smooth printing at a lower per-kilogram cost when reused with compatible spools. The kit includes black, white, grey and transparent 1kg refills and is aimed at users who can transfer filament onto SUNLU or Bambu Lab reusable spools before printing.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefill format:\u003c\/strong\u003e Designed for use with SUNLU and Bambu Lab reusable spools, this format cuts material waste and lowers ongoing filament cost.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePETG blend:\u003c\/strong\u003e Combines the toughness of PETG with ease-of-use similar to ABS, giving parts improved durability and reduced brittleness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Works directly with SUNLU and Bambu Lab reusable spools and can be adapted to custom printed spools for most desktop 3D printers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrinting stability:\u003c\/strong\u003e Engineered to reduce stringing and clogging, helping produce smoother surface finish and consistent extrusion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVacuum packaging:\u003c\/strong\u003e Each refill is sealed in airtight vacuum packaging to keep the filament dry and preserve printability until use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended settings:\u003c\/strong\u003e Suggested printing range helps you dial in good results: nozzle 240-260C, bed 60-70C, speed 50-200mm\/s.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis refill pack is best for hobbyists, small workshops, and makers who already own SUNLU or Bambu Lab reusable spools and want to reduce costs. It suits users printing functional parts that require higher impact resistance and toughness, such as brackets, enclosures, and durable prototypes.\u003c\/p\u003e\n\u003cp\u003eIt is not ideal for someone who needs a ready-to-print spool out of the box or a beginner who prefers plug-and-play convenience; buyers without reusable spools will need to acquire or print a compatible spool before these refills can be used.\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\u003eHigh toughness and impact resistance make printed parts durable for functional use.\u003c\/li\u003e\n\u003cli\u003eEconomy refill format lowers material cost when you reuse compatible spools.\u003c\/li\u003e\n\u003cli\u003eSmoother printing profile with reduced stringiness helps with surface finish and fewer clogs.\u003c\/li\u003e\n\u003cli\u003eSecure vacuum packaging preserves filament quality and prevents moisture issues.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCannot be used directly from the pack; requires an empty compatible reusable spool or a printed spool adapter.\u003c\/li\u003e\n\u003cli\u003eSome reports show mixed results for adhesion and stringing depending on printer setup and slicer settings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilament type\u003c\/td\u003e\n\u003ctd\u003ePETG refill\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\u003eSpool weight\u003c\/td\u003e\n\u003ctd\u003e1kg per refill\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack contents\u003c\/td\u003e\n\u003ctd\u003e4 colors: black, white, grey, transparent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended nozzle temp\u003c\/td\u003e\n\u003ctd\u003e240-260C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended bed temp\u003c\/td\u003e\n\u003ctd\u003e60-70C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackaging\u003c\/td\u003e\n\u003ctd\u003eVacuum sealed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe SUNLU PETG refill 4-pack is a sensible buy for users who already use reusable spools and need durable, impact-resistant filament at lower cost. It delivers reliable print quality and reduced stringing when tuned correctly, and vacuum packaging helps maintain performance, making it good value for makers focused on functional parts rather than instant plug-and-play convenience.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan these refills be used directly on a printer?\u003c\/strong\u003e\u003cbr\u003eNo, the refills must be loaded onto an empty reusable spool from SUNLU or Bambu Lab, or a compatible custom spool, before printing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat printing settings work best?\u003c\/strong\u003e\u003cbr\u003eSUNLU recommends 240-260C nozzle temperature, 60-70C bed temperature, and speeds between 50-200mm\/s; tune retraction to manage stringing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is moisture handled?\u003c\/strong\u003e\u003cbr\u003eThe filament is vacuum packaged to stay moisture-free during transit; store unopened until needed and consider a dryer if moisture is suspected after opening.\u003c\/p\u003e","brand":"SUNLU","offers":[{"title":"Default Title","offer_id":48178923798747,"sku":"B0FG7TGWMJ","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81CUqWQafTL._AC_SL1500.jpg?v=1769702899","url":"https:\/\/gearmusthave.com\/products\/sunlu-refill-petg-filament-1-75mm-4-pack-durable-petg-refills","provider":"GearMustHave","version":"1.0","type":"link"}