PETG-HF Refill - Bambulab

The Bambu Lab PETG HF is designed for those looking to print faster without sacrificing quality. It is optimized for significantly higher print speeds than standard PETG, reducing common issues like oozing and filament build-up on the nozzle (“clumping”). Its matte finish and smooth texture provide visual uniformity, even when print speed varies.

Image 1: PETG-HF compared to standard PETG. Source: Bambu Lab.

This filament offers a balanced combination of mechanical strength and durability. It has an XY tensile strength of approximately 34 ± 4 MPa, good stiffness (XY flexural modulus of around 2050 ± 120 MPa), and adequate impact resistance (≈ 31.5 kJ/m²). It withstands a heat deflection temperature under load (HDT 0.45 MPa) of around 69 °C, allowing functional parts to maintain thermal stability in daily use and even outdoors.

Image 2: UV resistance allows for outdoor use. Source: Bambu Lab.

To get the best results with PETG HF, specific settings and best practices are recommended. Before use, it should be dried for about 8 hours at 65 °C (or equivalent conditions depending on equipment) and stored with relative humidity below 20 % to avoid defects. Ideal extrusion temperatures are between 230–260 °C, the heated bed between 65–75 °C, and a textured or smooth PEI plate should be used, applying adhesive if necessary. Ventilation should be adjusted to support bridges and overhangs without excessively cooling the part, while print speeds can reach up to 300 mm/s if geometry allows.

Image 3: Being water-resistant makes it suitable for objects like fridges. Source: Bambu Lab.

Thanks to its formulation, PETG HF is suitable for outdoor parts exposed to water, UV radiation, and moderate environmental conditions, such as decorative items, gardening tools, outdoor accessories, signage, or frequently used mechanical parts. It is also ideal for rapid prototyping, series production with well-calibrated printers, and users who value professional finishes without setup complications.