PETG-CF Settings for FlashForge Finder

Temperature Settings

Start with the nozzle at 240°C and the bed at 0°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 0°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 FlashForge Finder supports nozzle temperatures up to 240°C and bed temperatures up to N/A. See the compatibility notice above for details.

Speed & Quality

For the FlashForge Finder, a print speed of 30-50 mm/s works well with PETG-CF. The first layer should be printed at 15-25 mm/s for solid bed adhesion. Outer walls at 70-80% of the main speed produce cleaner surface finishes.

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 FlashForge Finder

Here are the most common problems you may encounter when printing PETG-CF on the FlashForge Finder, 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 FlashForge Finder:

• 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

FlashForge Finder Specifications

The FlashForge Finder features a 140 x 140 x 140 mm build volume with a maximum print speed of 100 mm/s. It uses a Bowden extruder system, which is lighter on the print head but may require additional tuning for flexible filaments like TPU. The hotend can reach 240°C and the heated bed supports temperatures up to N/A.