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

In this review of the SUNLU 5kg PLA Plus 1.75mm filament, the bottom line is simple: this spool is aimed at makers and small shops that need long, uninterrupted print runs and a slightly tougher PLA variant. The 5kg large spool means fewer filament changes on big projects, and SUNLU's claim of neat winding and +/- 0.02mm dimensional accuracy translates to reliable feeding on most FDM machines. For those who prioritize continuous printing, bright color, and improved strength versus standard PLA, this filament is worth considering.

Key Features

• 5KG Large Spool Size: The 300mm diameter and 120mm width spool holds enough filament to print large models without frequent changes, saving time on long runs.
• PLA Plus Strength: Formulated to be stronger than standard PLA, the PLA Plus material offers better toughness and layer adhesion for functional parts and larger prints.
• Dimensional Accuracy: With a stated tolerance of +/- 0.02mm, the 1.75mm filament feeds consistently and reduces nozzle pressure variation that can affect print quality.
• Neatly Wound Spool: SUNLU emphasizes tangle-free winding to reduce the risk of knots or catches that interrupt prints on filament-hanger style setups.
• Wide Compatibility: The small diameter error and common spool hub size make this filament compatible with many FDM machines, including popular hobby printers that accept 1.75mm filament.

Who It's For

This filament is best for hobbyists, makers, and small workshop owners who print large models or batches and want to minimize spool swaps. Its 5kg capacity and neat winding make it especially useful for projects that run for many hours or days.

Beginners who need small sample rolls or users who require specialty materials like flexible TPU or high-temperature nylons should look elsewhere; this PLA Plus is a general-purpose, stronger PLA rather than a specialty engineering filament.

Pros & Cons

Pros

• Large 5kg spool reduces downtime and is convenient for big projects.
• Improved toughness and better layer adhesion compared with standard PLA for functional parts.
• Neat winding and tight dimensional accuracy help prevent feeding interruptions and ensure consistent extrusion.
• Bright color and broad printer compatibility make it a versatile choice for many FDM machines.

Cons

• Some users report mixed results on durability; occasional breakage can occur depending on printer setup and handling.
• The large spool size requires a printer or holder that can accommodate a 300mm diameter reel.

Specifications

Material	PLA Plus
Net Weight	5kg (11lbs)
Diameter	1.75mm (Dimensional accuracy +/- 0.02mm)
Spool Diameter	300mm
Spool Width	120mm
Spool Hub Hole	55mm
Compatibility	Most 1.75mm FDM printers

Our Verdict

The SUNLU 5kg PLA Plus is a strong value for anyone who runs long prints or needs a bright, tougher PLA that feeds consistently. Its large spool and neat winding reduce interruptions, and the tight diameter tolerance supports reliable extrusion on most 1.75mm FDM printers, making it a practical choice for makers and small shops.

Frequently Asked Questions

Will this spool fit my printer?
The spool has a 55mm hub hole and 300mm diameter, so it fits many printers and external spool holders; verify your printer or holder can accept a 300mm diameter reel.

Is PLA Plus compatible with standard PLA settings?
Yes, it prints similarly to PLA but benefits from slightly tuned settings for strength and adhesion; many users run it with common PLA profiles and see good results.

Does the filament tangle or knot?
SUNLU highlights neat winding to minimize knots and tangles, and most users report reliable feeding; proper spool mounting further reduces risk.