SUNLU High Speed PETG Filament 1.75mm 4KG Bundle - Fast, Tough PETG

In this review of the SUNLU High Speed PETG Filament 1.75mm 4KG Bundle the bottom line is simple: this kit is aimed at makers who need reliable, durable prints and want to push print speed without sacrificing strength. The pack of four 1kg spools provides a practical range of colors and the PETG formula blends the ease of PLA with the toughness of ABS, making it a solid choice for functional parts, rapid prototyping, and larger prints where impact resistance matters. The single biggest reason to buy is the combination of high speed printing capability and resilient material properties.

Key Features

• High speed capability: The filament melts and flows well enough to support very fast print rates up to 600mm/s when tuned, which shortens turnaround on large runs and prototypes.
• PLA and ABS combination: PETG offers the user-friendly handling of PLA while delivering improved durability and heat resistance closer to ABS, useful for practical, load-bearing prints.
• Enhanced toughness: The material is formulated for improved toughness, so printed parts resist stress and deformation better than many standard filaments.
• High impact strength: Parts printed with this PETG tolerate bumps and drops without cracking, making it appropriate for functional housings and end-use components.
• Recommended settings guidance: The product provides temperature and speed bands (bed 70-80C; nozzle 230-270C depending on speed) to help dial in reliable results at different print speeds.

Who It's For

This bundle is best for hobbyists, small workshops, and makers who print functional items that need durability and occasional high-speed production runs. People who use multi-spool jobs or want a ready supply of filament in four colors will appreciate the 4kg total weight and consistency across spools.

It is less well suited to users who demand very glossy, highly color-accurate decorative finishes or those who require specialty materials like flexible or engineering-grade polymers not represented by PETG. Beginners should note that higher-speed printing requires careful tuning of temperature and extrusion to avoid under-extrusion or stringing.

Pros & Cons

Pros

• Supports very fast print speeds when tuned, cutting production time for large runs.
• Combines ease of printing with improved toughness for practical, durable parts.
• High impact resistance makes parts less likely to crack under stress.
• Bundle format gives good value and a variety of colors for multi-part projects.

Cons

• Color finish is more matte and less glossy than some PETG variants, which some users may prefer less for decorative work.
• High-speed printing requires careful temperature adjustments to avoid quality trade-offs.

Specifications

Material	PETG
Diameter	1.75mm
Total weight	4kg (1kg per spool, pack of 4)
Recommended bed temp	70-80C
Recommended nozzle temp	230-270C (adjust by speed)
Supported print speed	50-600mm/s (dependent on temp)

Our Verdict

The SUNLU High Speed PETG 4KG bundle is a practical, cost-effective choice for makers who need tough, impact-resistant parts and want the option to print quickly. With clear temperature bands and good consistency across spools, it offers solid value for functional prototypes and end-use components, though aesthetic-focused users seeking high gloss or perfect color saturation should compare finishes before committing.

Frequently Asked Questions

Can this PETG be printed at 600mm/s?
Yes; the filament is formulated to flow at very high speeds, but achieving quality at 600mm/s requires raising nozzle temperature into the 255-270C band and tuning extrusion.

What bed temperature should be used?
Use a heated bed set between 70C and 80C for reliable adhesion and reduced warping with this PETG.

Is this filament good for functional parts?
Yes; the blend offers toughness and high impact strength, making it suitable for functional and load-bearing parts when printed with appropriate settings.