Bambu Lab PET-CF Black is a carbon-fibre reinforced PET filament for high-stiffness, lightweight structural applications where dimensional accuracy and low moisture uptake are critical. The carbon fibre reinforcement delivers a noticeably higher stiffness-to-weight ratio than standard PETG, making it well suited for precision brackets, enclosures, jigs, and structural components in engineering environments.

The 500g spool format is ideal for evaluation or smaller production runs before scaling up. A hardened nozzle (0.4 mm or larger) is required due to the abrasive carbon fibre. The deep black colour delivers a professional matte finish straight from the printer with minimal post-processing needed.

Key features

• Carbon-fibre reinforcement for high stiffness-to-weight ratio in structural parts.
• Excellent dimensional stability and low moisture absorption versus PETG or PLA.
• Low warping for reliable printing of flat and structural geometries.
• Professional matte black finish with minimal post-processing required.
• Hardened nozzle required (0.4 mm or larger) due to abrasive carbon fibre content.
• 500g spool ideal for evaluation, smaller runs, or material inventory variety.

Compatible with: All Bambu Lab printers (hardened nozzle required), and FDM printers with 1.75 mm hotend

In the box: 1 x 500g spool Bambu Lab PET-CF Black