SUNLU Large Spool 5KG PETG 1.75mm Filament - High Speed for Big Prints

In this review the SUNLU Large Spool 5KG High Speed PETG is examined for makers who need large-volume, durable filament for big 3D prints; the single biggest reason to buy is its combination of a true 5kg spool and high-speed melt behavior that lets users complete large projects faster while maintaining reliable dimensional accuracy. The reviewer found it best suited to workshops and production runs where spool swaps are inconvenient and where toughness and impact resistance matter more than glossy finish.

Key Features

• 5KG spool size: A 300mm diameter and 120mm width spool holds 5kg of filament so long prints and multiple parts run without frequent changes.
• High-speed printing: Enhanced melt and flow allow printing across a wide range from 30mm/s up to 600mm/s, speeding up large builds when the printer can handle it.
• PLA and ABS benefits: PETG blends the user-friendly printing of PLA with the durability of ABS, making parts both easier to print and more robust in use.
• Enhanced toughness: The material stands up to stress and repeated handling, which is useful for functional prototypes and parts that see mechanical load.
• High impact strength: Parts resist bumps and drops better than many alternatives, reducing risk of cracks during use.

Who It's For

The SUNLU 5KG PETG is aimed at hobbyists, small shops and makers who print large models or many parts and want fewer spool changes; it is especially useful where parts must be tough and impact resistant. It also appeals to users of FDM printers that accept a 55mm hub hole and larger spool dimensions.

Users who prioritize the glossiest, mirror-like finish or who need tiny, ultra-fine decorative details may want to test color and finish first, since some customers report a matte appearance and variable color quality compared with other PETG lines. Small-volume users or those with restricted spool mounts should check fit before ordering.

Pros & Cons

Pros

• Large 5kg capacity reduces spool changes and keeps long production runs moving.
• Fast melt and smooth flow support very high print speeds up to 600mm/s on capable machines.
• Good combination of ease-of-use and durability, blending PLA-like handling with ABS-like strength.
• High impact resistance makes printed parts more reliable in functional use.

Cons

• Finish and color saturation can be mixed; some users report a matte look rather than glossy PETG shine.
• Large spool dimensions require printers or spool holders that accommodate a 300mm diameter and 55mm hub hole.

Specifications

Filament type	PETG
Diameter	1.75mm
Spool weight	5kg
Spool diameter	300mm
Spool width	120mm
Spool hub hole	55mm
Dimensional tolerance	+/- 0.02mm

Our Verdict

For makers who need a large supply of resilient filament and the ability to run big or fast prints, the SUNLU 5KG PETG is good value and reliably tough. It is particularly strong where impact resistance and reduced spool handling matter, though buyers should confirm spool fit and accept a slightly matte color appearance in some runs.

Frequently Asked Questions

Will this spool fit most FDM printers?
The spool fits printers or holders that accept a 300mm diameter and a 55mm hub hole; confirm your spool mount clearance before buying.

Can it print at very high speeds?
Yes, the filament is formulated for smooth melt and flow and has been used successfully up to 600mm/s on capable machines, though settings and printer capability will affect results.

Is this PETG glossy like standard PETG?
Many users report a pleasant matte finish and good color options, but some find the sheen less glossy than other PETG formulations, so test a small print if glossy finish is critical.