SUNLU Large Spool 5KG ABS Filament - Durable, Heat Resistant 1750m

In this review the SUNLU Large Spool 5KG ABS Filament is tested as a practical, high-capacity option for makers who run long prints or produce multiple functional parts. The single biggest reason to buy is the 5KG spool itself: it removes frequent changeovers and saves time on large builds while delivering the expected toughness and heat resistance of ABS. The review focuses on printability, dimensional consistency and real-world durability rather than marketing claims.

Key Features

• Large capacity: The 5KG spool offers about 1750 meters of 1.75 mm filament so users can complete large prints without pausing to refill.
• High heat resistance: Recommended nozzle and bed temperatures make the filament suitable for parts that need better thermal performance than PLA.
• Durable and impact resistant: Prints made with this ABS material resist wear and surface damage, keeping parts intact under repeated handling.
• Dimensional precision: The 1.75 mm filament is manufactured to a tight diameter tolerance of +/- 0.02 mm, helping to reduce extrusion inconsistencies.
• Smooth printing behavior: Quality raw materials reduce stringing, bubbles and tangles, which makes the spool friendly for everyday use.
• Wide compatibility: The spool fits many FDM printers thanks to a 55 mm hub hole and a 300 mm spool diameter for easier unwinding.

Who It's For

This filament is best for hobbyists, small shops and educators who print functional prototypes, brackets, enclosures or larger display pieces and who need a reliable, heat-resistant material with fewer spool changes. Its large spool and strong mechanical properties suit users running long or repeat prints on printers like common Ender-series machines and other 1.75 mm setups.

Those who should look elsewhere include casual users who only print occasional decorative items and want easier-to-print materials like PLA or people who need specialty filaments such as flexible TPU or engineering-grade polymers with certified material datasheets.

Pros & Cons

Pros

• High capacity spool reduces downtime and is economical for frequent use.
• Tight diameter tolerance helps maintain consistent extrusion and layer quality.
• Good impact resistance and toughness produce durable parts for functional use.
• Generally smooth printing with less warping and stringing when settings are dialed in.

Cons

• Requires higher nozzle and bed temperatures, so printers must be able to reach ~250-260C and 80-100C for best results.
• Some users report mixed bed adhesion results, so a proper build surface or enclosure may be necessary for large flat parts.

Specifications

Material	ABS
Spool weight	5KG
Length (approx)	1750 meters
Filament diameter	1.75 mm (tolerance +/- 0.02 mm)
Recommended nozzle temp	250-260C
Recommended bed temp	80-100C
Spool dimensions	Diameter 300 mm, Width 148 mm, Hub hole 55 mm

Our Verdict

The SUNLU 5KG ABS spool is a practical, cost-effective choice for users printing functional parts and large models who need heat resistance and impact toughness. With tight diameter control and a large capacity spool it delivers consistent, durable prints when used with appropriate nozzle and bed temperatures, offering good value for repetitive or production-style printing.

Frequently Asked Questions

Will this filament work on my 1.75 mm FDM printer?
Yes, it is compatible with most 1.75 mm FDM printers and the larger hub hole helps spool mounting and unwinding.

What print settings should I start with?
Begin around 250-260C for the nozzle, 80-100C for the bed, 40-60 mm/s print speed, and use retraction around 5 mm at 50 mm/s as a baseline.

How durable are prints made with this ABS?
Printed parts show good impact resistance and surface toughness suitable for functional use, though proper bed adhesion and cooling control improve outcomes.