SUNLU Large Spool 2.7KG ASA Filament - Durable Outdoor Parts

In this review of the SUNLU Large Spool 2.7KG ASA Filament the bottom line is simple: it is a practical choice for makers who need a tough, weather resistant filament for outdoor functional parts. The 2.7KG spool reduces interruptions during longer prints and keeps shop time productive. Reviewers and users will appreciate the filament's high impact strength, heat resistance up to about 90C, and consistent 1.75mm diameter that helps avoid feeding issues on many FDM printers.

Key Features

• Large 2.7KG spool: Cuts filament swaps and improves production efficiency for long prints and multiple parts.
• UV, rain and heat resistance: Designed for outdoor mechanical parts that must resist sun exposure and moisture without rapid degradation.
• High heat tolerance: Withstands temperatures up to around 90C, so prints hold shape in warm environments and under load.
• Enhanced toughness and impact strength: Durable and resilient material suited for parts that endure knocks, drops and mechanical stress.
• Consistent 1.75mm diameter: Dimensional accuracy of about +/- 0.02mm reduces clogs and feeding errors across many FDM machines.
• Printer-friendly spool size: 242mm diameter and 103mm width fits most printers that accept large spools.

Who It's For

The SUNLU ASA filament is best for hobbyists, engineers and small workshops that produce outdoor functional components, brackets, housings or mechanical parts where UV and moisture resistance matter. Its toughness and heat tolerance make it a good option for parts exposed to sunlight or higher ambient temperatures.

Users who primarily print fine decorative models, very detailed miniatures, or who need a completely odorless, low-warp material for enclosed PLA-style printing may prefer other filaments. Also, printers that cannot accept larger spool dimensions should check compatibility before buying.

Pros & Cons

Pros

• Large 2.7KG spool reduces wasted time changing filament during batch jobs.
• UV, rain and heat resistance makes it a reliable choice for outdoor parts.
• High impact strength and toughness produce durable functional components.
• Good dimensional accuracy and spool design minimize feed problems on most FDM printers.

Cons

• Some users report mixed adhesion results and occasional warping on difficult geometries, so bed preparation and settings matter.
• A few reports mention the filament can feel brittle in certain prints, indicating tuning may be needed for optimal toughness.

Specifications

Our Verdict

The SUNLU Large Spool 2.7KG ASA Filament is a solid value for users who need a weather resistant, high-impact filament for outdoor or mechanical prints. The big spool and consistent diameter reduce interruptions and feeding problems, while the material properties give durable, heat tolerant parts when printed with recommended settings. It is a good buy for makers focused on functional, long-lasting components.

Frequently Asked Questions

Does this filament handle outdoor exposure?
Yes. ASA is formulated for UV and rain resistance so printed parts hold up better outdoors than PLA or ABS in sun and moisture.

What temperatures should I use?
SUNLU recommends a nozzle temperature of 230-260C and a bed temperature of 80-120C; printing speed around 50-100mm/s works well.

Will the large spool fit my printer?
Check your spool mount; the spool is 242mm in diameter, 103mm wide with a 63mm hub hole, and fits many but not all FDM printers.