PLA Plus 5kg 1.75mm Filament Spool - Large Capacity for Big Prints

Our review looks at the SUNLU 5kg PLA Plus 1.75mm filament spool and its suitability for makers tackling large or long print runs. The bottom line: this spool is aimed at users who need high capacity and consistent feeding, with the single biggest reason to consider it being the 5KG large spool combined with tight dimensional accuracy that reduces printer interruptions. The review examines real-world handling, print quality, and compatibility so you can decide if this is the right bulk filament for your projects.

Key Features

• 5KG large spool: The 300mm diameter and 120mm width spool holds a large amount of filament so you can complete long prints and big projects without frequent spool changes.
• PLA Plus formulation: Claimed to be three times stronger than standard PLA, the PLA Plus offers brighter color and improved layer adhesion for sturdier parts.
• Neatly wound spool: The filament arrives neatly wound with no knots, which improves feeding reliability and reduces the chance of printer jams caused by tangles.
• Dimensional accuracy: With a stated tolerance of +/- 0.02mm, the 1.75mm filament maintains consistent flow and broad compatibility across FDM machines.
• Wide compatibility: Works with SUNLU printers and most other FDM printers, making it a practical choice if you run multiple machines or third-party setups.

Who It's For

This spool is best for hobbyists, small shops, and educators who run medium to large prints or many parts and want fewer spool swaps. Users who value tidy spool winding and consistent diameter will appreciate the reduced risk of tangles and smoother long-run prints.

It is less suitable for someone who only prints tiny one-off items or who needs frequent color swaps for visual prototyping; smaller sample spools or multi-color setups may be a better fit for those workflows.

Pros & Cons

Pros

• Large 5KG capacity reduces downtime and is convenient for long projects.
• PLA Plus formulation yields good layer adhesion and brighter color compared with standard PLA.
• Neatly wound spool design minimizes knots and feeding issues during prints.
• Tight diameter tolerance improves compatibility with most 1.75mm FDM printers.

Cons

• Some users report mixed experience with durability; occasional brittle breaks can occur depending on part geometry and print settings.
• Large spool dimensions require adequate spool holders and storage space on some machines.

Specifications

Spool weight	5KG (11lbs)
Filament diameter	1.75mm
Dimensional accuracy	+/- 0.02mm
Spool diameter	300mm
Spool width	120mm
Spool hub hole	55mm
Material	PLA Plus

Our Verdict

The SUNLU 5kg PLA Plus filament is a strong value for anyone doing large prints or many parts, offering tidy spooling, consistent diameter, and improved strength and adhesion over standard PLA. It is a sensible bulk choice for hobbyists and small shops who need long runs without constant spool changes, though those seeking the utmost toughness for load-bearing parts should validate settings for their design.

Frequently Asked Questions

Is this spool compatible with common FDM printers?
Yes. The 1.75mm diameter and +/- 0.02mm tolerance make it compatible with most 1.75mm FDM printers and accessory systems.

Will the large spool fit standard spool holders?
Check your printer or holder clearance: the spool is 300mm in diameter and 120mm wide, so some compact holders may need adjustment.

Does PLA Plus require special temperature settings?
PLA Plus prints similarly to PLA but may benefit from slightly adjusted print temperatures and cooling to optimize layer adhesion and reduce brittleness.