SUNLU Large Spool 5KG High Speed PETG 1.75mm - Fast, Durable Filament

In this review the SUNLU Large Spool 5KG High Speed PETG is assessed for makers who print large parts and value speed without sacrificing toughness. The bottom line: this filament is best for users who need lots of continuous filament for big models and want the option to print very quickly, thanks to its enhanced melt flow and dimensional accuracy of +/- 0.02mm. It performs like a middle ground between PLA ease and ABS strength, making it a practical choice for durable prototypes and functional prints.

Key Features

• 5KG Spool Size: The 300mm diameter and 120mm width spool holds 5kg of filament so long runs and large projects rarely need mid-print swaps.
• High Speed Printing: With improved fluidity that allows 30mm/s up to 600mm/s, users can finish large jobs faster while maintaining acceptable surface quality.
• PLA and ABS Advantages: PETG combines the user-friendly printing characteristics of PLA with the durability of ABS for parts that are both easy to print and functional.
• Enhanced Toughness: The material is notably resilient, producing parts that resist bending and mechanical stress better than many common filaments.
• High Impact Strength: Prints tolerate bumps and drops without cracking, making this filament suitable for functional, handled parts and prototypes.

Who It's For

This filament is aimed at hobbyists and small workshops that print large models or many replacement parts and want to avoid frequent spool changes. Users who value a balance of printability and mechanical strength will appreciate the PETG blend that eases print setup while providing durable outcomes.

Those who need glossy display parts with mirror-like finishes or require materials with specialized chemical resistance should look elsewhere; this PETG has a more matte appearance and is optimized for toughness and speed rather than high-gloss aesthetics.

Pros & Cons

Pros

• Large 5KG spool reduces downtime on long or multiple prints.
• Very wide print speed window, with customers reporting successful runs up to 600mm/s on compatible machines.
• Strong, impact-resistant parts that hold up to mechanical stress and everyday use.
• Dimensional accuracy of +/- 0.02mm gives reliable, repeatable results for fit-critical components.

Cons

• The matte color finish and some reported variability in color quality mean it may not satisfy users seeking glossy, show-piece aesthetics.
• Large spool dimensions require printers with adequate spool clearance and a 55mm hub hole to mount smoothly.

Specifications

Material	PETG
Diameter	1.75mm
Spool Weight	5KG
Spool Diameter	300mm
Spool Width	120mm
Spool Hub Hole	55mm
Dimensional Accuracy	+/- 0.02mm

Our Verdict

The SUNLU 5KG High Speed PETG is a practical buy for makers and small shops that print large or functional parts and want to reduce spool swaps. Its combination of high-speed capability, toughness, and reliable dimensional accuracy makes it a strong value for users prioritizing throughput and durability over glossy appearance.

Frequently Asked Questions

Will this spool fit most FDM printers?
The spool fits printers that can accommodate a 300mm diameter, 120mm width and a 55mm hub hole; check spool clearance before buying.

Can I really print at 600mm/s?
Customers report achieving very high speeds on compatible machines; actual top speed depends on your printer hardware and tuning.

Is it easy to print like PLA?
Yes, PETG combines PLA-like ease of use with ABS-like toughness, though print settings differ from PLA for best adhesion and finish.