ABS Settings for Longer LK5 Pro

Temperature Settings

Start with the nozzle at 245°C and the bed at 103°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 103°C for subsequent layers.

The ABS filament has a recommended nozzle temperature range of 230-260°C and a bed temperature range of 95-110°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 30-70 mm/s works well with ABS. 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 70 mm/s with a 0.24-0.28mm layer height. The standard 0.2mm layer height at 50 mm/s provides the best balance of speed and quality for most prints.

Bed Adhesion

ABS requires high bed temperatures (95-110°C). Use PEI sheets or apply ABS slurry (ABS scraps dissolved in acetone) for excellent adhesion. A brim is strongly recommended for medium and large parts. Kapton tape is another classic option.

Common Issues with ABS on Longer LK5 Pro

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

• Warping: Use an enclosure, increase bed temp to 100-110°C, add a brim, and set fan to 0%
• Layer splitting/cracking: Increase nozzle temperature and ensure the enclosure is sealed
• Strong fumes: Print in a ventilated area or use a fume extractor with activated carbon filter
• Stringing: Reduce temperature slightly and tune retraction settings

Tips for Best Results

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

• An enclosure is non-negotiable for reliable ABS prints -- even small drafts cause warping
• Preheat the bed to full temperature and let it soak for 5-10 minutes before printing
• ABS slurry (dissolved ABS in acetone) is the best adhesion method for ABS
• You can acetone-smooth ABS prints for a glossy, professional finish
• Consider ASA as an alternative if you need UV resistance -- ABS yellows in sunlight

Support Settings

For prints requiring supports with ABS, 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.

ABS 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.