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

Our review of the SUNLU Large Spool 5KG High Speed PETG finds it best suited for makers and small production shops that need long, uninterrupted prints and tough, impact-resistant parts. The single biggest reason to consider this filament is the 5kg spool size combined with enhanced flow that enables very fast printing while maintaining reliable dimensional accuracy, so users printing large models or many parts benefit from fewer spool changes and consistent results.

Key Features

• 5KG spool size: Large capacity reduces spool swaps and is ideal for extended print runs or big models without pausing work.
• High speed printing: Enhanced fluidity allows melting and flow tuned for speeds from 30mm/s up to 600mm/s, helping complete projects faster when the printer and settings allow.
• PETG blend of PLA and ABS traits: Combines the ease of use of PLA with the added toughness and heat resistance of ABS for a versatile material choice.
• Enhanced toughness: Material toughness makes printed parts more durable under stress and suitable for functional prototypes and end-use items.
• High impact strength: Good resistance to bumps and drops reduces the chance of cracks or breakage in mechanical or handled pieces.

Who It's For

This filament is aimed at experienced hobbyists, prosumers and small workshop users who print large models or run many prints back-to-back and need a robust, high-capacity spool with consistent diameter control. The large 5kg spool and 300mm diameter are particularly useful for printers with filament supports that accept wider reels.

Those who should look elsewhere include users with very small desktop printers that cannot accommodate a 300mm-diameter spool or anyone who needs a highly glossy PETG finish; some users report a more matte appearance and mixed color intensity compared with other PETG lines.

Pros & Cons

Pros

• Large 5kg spool reduces interruptions for long prints and production runs.
• High-speed capability up to 600mm/s can significantly cut print time when tuned properly.
• Balanced material properties deliver easy printing like PLA with added durability similar to ABS.
• Dimensional accuracy of +/- 0.02mm gives consistent layer and dimensional results.

Cons

• Spool size and 300mm diameter may not fit all desktop printer spool mounts without an adapter.
• Some users note the color finish is more matte and can appear less glossy than other PETG varieties.

Specifications

Our Verdict

The SUNLU 5KG High Speed PETG is a strong value for users who need large-capacity filament that prints quickly and produces durable, functional parts. Its combination of high-speed capability, toughness and tight diameter tolerance makes it a practical choice for makers and small shops, provided the printer can accept the larger spool size.

Frequently Asked Questions

Will this spool fit my printer?
Check that your printer or spool holder accepts a 300mm diameter and a 55mm hub hole, otherwise an adapter will be needed.

Is this filament easy to print?
Yes, PETG blends PLA ease with ABS strength, but tuning for retraction and cooling helps avoid stringing at higher speeds.

Does it print well at very high speeds?
Customers report successful prints up to 600mm/s on capable machines, though optimal quality requires correct temperature and flow settings.