Carbon Fiber PLA Settings for Longer LK5 Pro

Temperature Settings

Start with the nozzle at 215°C and the bed at 58°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 58°C for subsequent layers.

The Carbon Fiber PLA filament has a recommended nozzle temperature range of 200-230°C and a bed temperature range of 50-65°C. The Longer LK5 Pro supports nozzle temperatures up to 260°C and bed temperatures up to 110°C, which fully covers the recommended range for this filament.

Speed & Quality

For the Longer LK5 Pro, a print speed of 30-50 mm/s works well with Carbon Fiber PLA. 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

Carbon Fiber PLA adheres similarly to regular PLA. A clean PEI sheet works well. For glass beds, use glue stick. The carbon fibers reduce warping compared to regular PLA.

Common Issues with Carbon Fiber PLA on Longer LK5 Pro

Here are the most common problems you may encounter when printing Carbon Fiber PLA on the Longer LK5 Pro, along with proven solutions:

• Nozzle wear: You must use a hardened steel nozzle -- carbon fibers will destroy a brass nozzle in hours
• Clogging: Use a 0.5mm or 0.6mm nozzle diameter; the fibers can block smaller nozzles
• Brittle prints: More brittle than regular PLA due to fiber stress points; design for the stiffness, not impact loads
• Under-extrusion: Increase nozzle temperature by 5-10°C and ensure the nozzle is not partially clogged

Tips for Best Results

Follow these expert tips to get the best possible prints with Carbon Fiber PLA on your Longer LK5 Pro:

• A hardened steel nozzle is mandatory -- do not print CF PLA with a brass nozzle
• Use a 0.5mm or 0.6mm nozzle for the most reliable printing with carbon fibers
• Print 25-50% slower than regular PLA to reduce stress on the extruder and improve quality
• CF PLA excels in stiffness and rigidity -- ideal for structural parts, not impact-resistant ones
• The matte finish looks professional and hides layer lines better than glossy filaments

Support Settings

For prints requiring supports with Carbon Fiber PLA, 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.

Carbon Fiber PLA at a Glance

Longer LK5 Pro Specifications

The Longer LK5 Pro features a 300 x 300 x 400 mm build volume with a maximum print speed of 180 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 260°C and the heated bed supports temperatures up to 110°C.