Important

Layer Delamination

Insufficient adhesion between layers causing separation. Critical issue directly affecting strength.

Symptoms

  • Visible gaps between layers
  • Print easily splits along layer lines
  • Horizontal cracks on sides
  • Layers separating during printing

Main Causes

1. Insufficient Nozzle Temperature

Too low temperature prevents new layers from properly fusing to previous layers, weakening layer adhesion.

2. Excessive Cooling

Too much part cooling causes previous layers to cool excessively, weakening adhesion with new layers.

3. Layer Height Too High

High layer height reduces contact area between layers, decreasing adhesion strength.

4. Print Speed Too Fast

Excessive speed doesn't allow enough time for proper layer fusion, weakening adhesion.

Solutions & Checkpoints

Increase Nozzle Temperature

Approach the upper end of recommended temperature range.

  • • Increase in 5°C increments and test
  • • Adjust within range that doesn't increase stringing
  • • Use temperature tower to find optimal temperature

Adjust Fan Speed

Reduce cooling to maintain layer temperature.

  • • Decrease fan speed by 10-20%
  • • Set minimum layer time for small parts
  • • Use minimal fan for ABS/ASA

Adjust Layer Height

Lower layer height increases adhesion area.

  • • 0.2mm or less recommended for 0.4mm nozzle
  • • Consider 0.12-0.16mm for strength priority
  • • 50-75% of nozzle diameter is guideline

Reduce Print Speed

Slower speed ensures layer adhesion time.

  • • Wall speed: 30-50mm/s
  • • Infill speed: 50-80mm/s
  • • Even slower for strength priority

Adjust Flow Rate

Increase flow rate to improve layer contact.

  • • Start from 100% baseline
  • • Increase to 102-105% if delamination occurs
  • • Too high reduces dimensional accuracy

Use Enclosure

Maintaining chamber temperature improves layer adhesion.

  • • Especially effective for ABS/ASA/PC
  • • Maintain chamber temperature 40-60°C
  • • Not needed for PLA (may be detrimental)