PETG-CF Settings for Elegoo Centauri Carbon 2

Temperature Settings

Start with the nozzle at 245°C and the bed at 75°C. If you see poor layer adhesion, increase the nozzle temperature by 5°C increments. If you experience stringing, decrease the nozzle temperature by 5°C. For the first layer, you can increase the bed temperature by 5°C for better adhesion, then let it drop back to 75°C for subsequent layers.

The PETG-CF filament has a recommended nozzle temperature range of 230-260°C and a bed temperature range of 70-80°C. The Elegoo Centauri Carbon 2 supports nozzle temperatures up to 320°C and bed temperatures up to 110°C, which fully covers the recommended range for this filament.

Speed & Quality

The Elegoo Centauri Carbon 2 supports high-speed printing at up to 500 mm/s. For PETG-CF, we recommend 30-50 mm/s for general printing. Start with the lower end for quality-critical prints and increase for draft prints. Always print the first layer at 25-50% of your normal speed for better adhesion.

For quality-critical prints like miniatures or display pieces, reduce the speed to 30 mm/s and use a 0.12-0.16mm layer height. For draft or rapid prototyping, you can push the speed to 50 mm/s with a 0.24-0.28mm layer height. The standard 0.2mm layer height at 40 mm/s provides the best balance of speed and quality for most prints.

Bed Adhesion

PETG-CF adheres similarly to standard PETG. Use a textured PEI sheet or apply glue stick on smooth PEI as a release agent. The carbon fibers reduce warping compared to plain PETG, so adhesion is generally easier. Let the bed cool completely before removing prints.

Common Issues with PETG-CF on Elegoo Centauri Carbon 2

Here are the most common problems you may encounter when printing PETG-CF on the Elegoo Centauri Carbon 2, along with proven solutions:

• Nozzle wear: A hardened steel nozzle is mandatory -- carbon fibers will destroy brass nozzles within a few prints
• Clogging: Use a 0.5mm or 0.6mm nozzle to prevent fiber blockages; avoid long retractions
• Stringing: Reduce nozzle temperature by 5°C and tune retraction; dry filament before printing
• Brittle prints: CF-filled PETG trades flexibility for stiffness; design accordingly for rigidity, not impact loads

Tips for Best Results

Follow these expert tips to get the best possible prints with PETG-CF on your Elegoo Centauri Carbon 2:

• A hardened steel nozzle is mandatory -- never use brass with carbon fiber filaments
• Use a 0.5mm or 0.6mm nozzle for the best reliability and flow
• Dry PETG-CF before every use -- moisture causes bubbling and weakens carbon fiber bonding
• Print 30-40% slower than plain PETG for best surface quality and fiber alignment
• PETG-CF excels for functional parts needing stiffness without the high temps of nylon-CF

Support Settings

For prints requiring supports with PETG-CF, use tree supports for easier removal and less scarring. Set a 0.15-0.2mm Z-distance between support and model. If you have a dual-extruder setup, consider PVA (for PLA/PETG) or HIPS (for ABS) as dedicated water/solvent-soluble support material.

PETG-CF at a Glance

Elegoo Centauri Carbon 2 Specifications

The Elegoo Centauri Carbon 2 features a 256 x 256 x 256 mm build volume with a maximum print speed of 500 mm/s. It uses a direct drive extruder system, which provides better control over flexible and specialty filaments. The hotend can reach 320°C and the heated bed supports temperatures up to 110°C.