SUNLU Review 2026: Is This 3D Printer Filament Worth It?
Disclosure: This SUNLU review contains affiliate links. If you buy through them I may earn a commission at no extra cost to you. My assessment is based on the brand’s published range, pricing and real product details.
Ask in almost any 3D printing group which filament is the best value and SUNLU comes up every single time. After a lot of spools through my printers, this SUNLU review covers the brand, its filament and dryer ranges, print quality and value, an honest note on materials, and whether it is worth buying in 2026.
What is SUNLU?
SUNLU is a 13+ year veteran of the 3D printing world, best known for affordable, reliable filament, and increasingly for the accessories that go around it. The range is enormous: everyday PLA, PLA+ and PETG, tough engineering materials (PA-CF, PC, PEEK, ASA, ABS), high-speed filaments tuned for fast printers, flexible TPU, and a whole wall of aesthetic options, silk, matte, dual-color, wood, marble, galaxy and glow-in-the-dark. It also makes resins and, crucially, the accessories that keep filament printing well.
The filament: value and variety
Filament is the heart of it. Standard PLA 1KG starts around $10.69 (down from $18.99) and comes in a genuinely huge color list, dozens of solids, transparents and fluorescents. PLA+ (from $10.89) adds toughness, and the PETG and engineering lines cover functional parts. For creative prints, the Galaxy, Rainbow, multi-color Silk and dual-color filaments (from ~$15.99) let you get striking results even without a multi-material system. Reviews are strong across the catalogue (the standard PLA alone has 100+ reviews), and consistency, tight diameter tolerance and clean winding, is what people praise most.
The accessories: dryers and the AMS Heater
Where SUNLU really stands out is the ecosystem around filament. Its Filadryer range (S4, S2 and others) tackles the biggest hidden problem in 3D printing, moisture, by drying spools before and during printing, which noticeably improves quality with PETG, TPU, nylon and more. The clever AMS Heater retrofits a Bambu Lab AMS so it can dry filament while printing, a genuinely useful upgrade that has earned SUNLU press coverage. There are also UV curing boxes, an ultrasonic cleaner for resin prints, reusable spools and even a MakerKit RC line. For a filament brand, that is an unusually complete toolkit.
An honest note on materials and safety
A responsible tip: match the material to your setup and ventilate appropriately. PLA is the easy, low-odor starting point; PETG and TPU benefit from a dry spool (hence the dryers); and ABS, ASA and some engineering filaments can emit stronger fumes and warp, so they are best printed in an enclosure with good ventilation. Resin printing, which SUNLU also supplies, needs gloves, eye protection and ventilation, and careful disposal. None of this is unique to SUNLU, it is standard 3D printing practice, but choosing the right material for your printer and space will get you the best, safest results.
Pricing and value
Value is the whole point of SUNLU. Filament is among the most affordable from a reputable brand, PLA from $10.69, specialty filaments from ~$15.99, and the AMS Heater at $101.99, and there are bulk options (250g mini spools up to 3KG/5KG large spools) to cut cost per kilo further. On top of that there is an active anniversary sale, an extra code (SALE50), free shipping to the US, UK, EU, Canada and Australia, a rewards program, and student and key-worker discounts. For hobbyists who print constantly, the savings add up fast.
Pros and cons
Pros: excellent value on reliable filament (PLA from $10.69); an enormous range of materials and colors including silk, matte, wood, galaxy and glow; a standout accessory ecosystem (Filadryer dryers, Bambu AMS Heater, curing box, cleaner); strong reviews and 13+ years of experience; free shipping to major regions plus student/key-worker discounts and an extra code.
Cons: some specialty and engineering filaments have minimum order quantities (MOQ); advanced materials (ABS, resin) need proper ventilation and care; and the sheer number of options can be daunting for beginners.
Who SUNLU is for
SUNLU suits everyone from first-time hobbyists to prolific makers and small print farms. Beginners get cheap, dependable PLA in every color; enthusiasts get silk, matte and engineering options plus the dryers that unlock trickier materials; and Bambu Lab owners get the AMS Heater upgrade. It is ideal for anyone who prints regularly and wants to keep material costs down without sacrificing reliability. It is less essential for someone who prints once a year, though even then the low prices are appealing.
Is SUNLU worth it?
Absolutely. SUNLU pairs some of the best-value, most reliable filament on the market with a genuinely useful accessory ecosystem, dryers, the AMS Heater, curing and cleaning gear, backed by 13+ years of experience, strong reviews and buyer-friendly perks. Whether you want cheap everyday PLA or striking silk and galaxy prints, plus the tools to print them well, SUNLU delivers. It is one of the easiest recommendations in 3D printing.
How to save at SUNLU
Stack the current anniversary sale (PLA from $10.69) with code SALE50 for an extra discount, and buy larger 3KG/5KG spools to lower your cost per kilo. Free shipping to major regions is included, and there are student, graduate and key-worker discounts plus a rewards program. Check the latest deals on the SUNLU store page or shop directly at SUNLU.
Frequently asked questions
Is SUNLU filament good? Yes, it is widely regarded as excellent value with reliable quality, tight diameter tolerance and clean winding, and it comes in a huge range of materials (PLA, PLA+, PETG, TPU, engineering) and colors, backed by strong reviews.
What is the SUNLU AMS Heater? It is a $101.99 accessory that retrofits a Bambu Lab AMS so it can dry filament while printing, helping prevent moisture-related print issues, alongside SUNLU’s standalone Filadryer dryers.
How cheap is SUNLU filament? Standard PLA 1KG starts around $10.69 (from $18.99), with specialty filaments from about $15.99 and bulk 3KG/5KG spools to lower the per-kilo cost; an anniversary sale and code SALE50 add further savings.
