Creality PETG Filament Refill 1.75mm 4kg - Hubless Refill for Bambu

In this review of the Creality PETG Filament Refill 1.75mm 4kg, the bottom line is simple: this spoolless PETG refill is aimed at users who run Bambu Lab or similarly configured reusable spool systems and want a high-precision, toughness-enhanced material in bulk. The biggest reason to buy is the hubless format combined with tight dimensional control, which delivers steady feeding and reduces single-use spool waste for frequent printers and small production runs.

Key Features

• Hubless design: Fits Bambu Lab reusable spools and select metal spools to cut millions of plastic spools annually and simplify storage.
• Toughness-enhanced PETG: Blends PLA and ABS traits for improved toughness, reducing cracking and warping on functional parts.
• Recommended temperatures: Prints cleanly at a nozzle range of 220-250C and a base plate of 70-80C for reliable adhesion and layer bonding.
• High precision diameter: 1.75mm filament with a tolerance of +/- 0.03mm promotes consistent extrusion and fewer dimension-related print issues.
• Tangle-free winding: Mechanically wound to keep most spools neat, lowering the chance of tangles and feed failures during long prints.
• Moisture protected: Vacuum sealed and dried to reduce clogging and bubbling caused by moisture absorption.

Who It's For

This refill is best for hobbyists and small workshops that use Bambu Lab A1/A1 Mini/X1/X1C/X1E/P1/P1P/P1S printers or compatible reusable spool systems and want to buy filament in a larger, more sustainable format. It is also suited for users printing functional parts where toughness and reduced warping matter.

Those who should look elsewhere include users tied to spool formats that are not compatible with hubless refills, and anyone who expects factory-perfect winding every time; a minority of customers report wound quality and brittleness issues, so if you need guaranteed flawless winding or compatibility with other reusable spool brands, check fit and winding quality before committing.

Pros & Cons

Pros

• Consistent print quality and color consistency on supported machines, delivering good value for the amount of filament supplied.
• High dimensional accuracy at 1.75mm +/-0.03mm helps ensure steady feeding and more predictable prints.
• Hubless refill reduces single-use spools and pairs well with Bambu Lab reusable spools for lower waste and easier storage.
• Tough PETG formula reduces cracking and warping for functional parts compared with plain PLA.

Cons

• A minority of customers report poor winding and tangle resistance, so occasional filament brittleness or snags are possible.
• Compatibility is mixed with some third-party reusable spool systems, so it does not fit every hubless spool type equally.

Specifications

Material	PETG
Diameter	1.75mm
Tolerance	+/- 0.03mm
Net weight	4kg (8.8lb)
Compatible spools	Bambu Lab reusable spool, Marswork metal spool, Creality detachable spool
Recommended nozzle temp	220-250C
Bed temp	70-80C

Our Verdict

The Creality hubless PETG refill is a practical choice for Bambu Lab users and small production environments who want bulk filament with tight diameter control and improved toughness. It is good value when compatibility and winding quality meet expectations, but buyers should verify spool fit and inspect winding on arrival to avoid the occasional tangle or brittle sections reported by some customers.

Frequently Asked Questions

Will this filament work with Bambu Lab printers?
Yes; it is designed to fit Bambu Lab A1, A1 Mini, X1, X1C, X1E, P1, P1P and P1S when used with the Bambu Lab reusable spool system.

What printing temperatures should I use?
Print at a nozzle range of about 220-250C with a bed temperature around 70-80C for best adhesion and layer bonding.

Is the filament vacuum sealed?
Yes; the filament is dried and vacuum sealed to reduce moisture, bubbling and clogging during printing.