Filament ROSA3D PC/PBT + 15% CF 1.75 mm 1 kg — high-temp, UV-resistant, impact-grade (Black)

ROSA3D PC/PBT + 15% CF filament (1.75 mm, 1 kg, Black) is a reinforced thermoplastic blend designed for demanding functional 3D printed parts. The material combines polycarbonate (PC) and polybutylene terephthalate (PBT) base polymers with 15% short carbon fiber reinforcement to deliver improved stiffness, thermal stability and impact performance. The 1.75 mm filament diameter on a 1 kg spool is intended for hobbyist and professional FDM/FFF printers that accept composite filaments and can accommodate high-temperature print profiles.

Advantages

This PC/PBT composite offers high heat resistance and dimensional stability, which helps printed parts retain shape under elevated temperatures. Carbon fiber reinforcement increases tensile stiffness and reduces part deformation, while also improving wear resistance of exposed surfaces. The blend includes UV-resistant characteristics suitable for applications exposed to sunlight. When processed with appropriate hardened nozzles and tuned settings, the filament produces rigid, durable components with a matte black finish that mask printing artifacts.

Suitable for

• Functional prototypes requiring stiffness and heat resistance
• Structural housings and enclosures for electronics and machinery
• Mounting brackets, fixtures and mechanical parts subject to impact
• Outdoor components needing UV resistance and dimensional stability
• Large-format or multi-part assemblies where low warping is important

Key specifications

• Base polymer: PC/PBT blend
• Reinforcement: 15% short carbon fiber
• Diameter: 1.75 mm
• Spool weight: 1 kg
• Color: Black (matte)
• Properties: high-temperature resistance, improved stiffness, impact-grade, UV resistant

How to use

Load the 1.75 mm filament onto a printer equipped for composite materials and use a hardened steel or equivalent wear-resistant nozzle to prevent abrasion. Set a high-temperature extrusion range appropriate for PC/PBT blends and enable an enclosed build chamber or heated bed to reduce warping. Print at moderate to high flow rates and consider conservative layer heights to optimize fiber distribution and part strength. Allow printed parts to cool gradually inside the enclosed chamber to minimize internal stresses.

Usage recommendations

Use a hardened nozzle (steel, ruby or equivalent) and ensure your printer's hotend and extruder can sustain the recommended temperatures for PC/PBT materials. Calibrate retraction and print temperature to balance interlayer adhesion with surface finish; post-processing such as annealing can further improve thermal and dimensional stability where required.