Prusament PETG Jet Black 900g Refill (NFC Compatible)

Prusament PETG Jet Black is a high-quality PETG filament from Prusa Polymers' own production. This Refill 900 g variant is designed for refilling the new generation detachable Prusament spool (NFC). This significantly reduces the amount of plastic waste and the cost of further printing without losing the convenience of an original Prusament spool.

The refill is wound on a cardboard tube adapted for the new thinner NFC spools – after reassembling the sides, you get a full-fledged smart spool with a stored NFC tag according to the OpenPrintTag standard. The tag contains data about the material, color, and other parameters and can be read, for example, by the Prusa mobile app and in the future by upcoming NFC spool holders.

Main advantages and use

• High-quality PETG for universal use Great for functional parts, holders, covers, mechanical prototypes, workshop parts, technical and outdoor use (where there is no long-term extreme UV and heat).
• Intense Jet Black color Deep black, semi-matte surface that masks layers well and is suitable for both design and technical models.
• Refill for NFC spools The 900 g refill is sized to fit comfortably after winding onto the new narrower NFC spool, avoiding problems during unwinding even in multi-material systems.
• Integrated NFC tag (OpenPrintTag) The refill is compatible with the new Prusament NFC spools. After mounting the spool, you can use the OpenPrintTag open standard – a smart tag with data directly on the spool, without dependence on the cloud.
• High dimensional accuracy The 1.75 mm filament is produced with a typical accuracy of around ±0.02–0.03 mm, contributing to reliable feeding and consistent print results.

Recommended print settings

Specific profiles for Prusament PETG are available in PrusaSlicer, below are indicative ranges:

• Filament diameter: 1.75 mm
• Nozzle temperature: approx. 230–250 °C
• Bed temperature: approx. 70–90 °C (depending on the surface type)
• Print speed: normally 40–60 mm/s (depending on model complexity)
• Cooling: medium to lower (compared to PLA)

Before printing, we recommend thoroughly degreasing the bed (isopropyl alcohol) and using a brim for larger parts. For long-term top print quality, it is advisable to dry PETG from time to time in a filament dryer according to the manufacturer's recommendations.

Why choose a refill instead of a new spool

• Less plastic waste – you reuse existing plastic spool sides.
• Space saving – the refill takes up less space in storage and during transport.
• Greener solution – lower carbon footprint compared to purchasing a complete new spool.
• Full compatibility with the NFC standard – after assembly onto a compatible spool, it works exactly like an original NFC Prusament.

Suitable applications

• functional and structural parts
• holders, grips, workshop fixtures
• electronics covers, home equipment
• technical prototypes and small series products

Package contents

• 1× Prusament PETG Jet Black 900g Refill (NFC Compatible) – filament wound on a cardboard core, designed for assembly onto a detachable NFC Prusament spool.

Tips for successful printing with PETG

• Do not print on completely clean smooth glass without a separation layer – PETG can adhere too strongly. Use a recommended surface (e.g., textured or satin sheet) or a suitable separation agent.
• Do not expose finished parts to temperatures above approx. 70–80 °C for a long time – deformation may occur.
• For dark colors (like Jet Black), follow recommended cooling and speed to ensure the surface is even and without burning.

Key features:

• 900g refill of high-quality Prusament PETG Jet Black for new NFC spools
• Compatibility with the OpenPrintTag open NFC standard after assembly onto an NFC spool
• Deep Jet Black color with a semi-matte surface for elegant and technical parts
• High dimensional accuracy of 1.75 mm filament for reliable printing
• Ecological solution – reusable spool, less plastic waste
• Optimized weight for trouble-free unwinding in the narrower NFC spool and multi-material systems
• Suitable for functional prototypes, holders, covers, and mechanically stressed parts