How to Fix Layer Separation Delamination in 3D Printing

Layer separation or delamination in 3D printing happens when layers do not bond well. To fix it, increase the print temperature, slow down the print speed, and ensure proper bed adhesion. Also, check for drafts or cooling fans that may cool layers too fast.

Why This Happens

Layer separation or delamination occurs when the new layer does not stick well to the previous one. This can happen because the plastic cools too quickly, the print temperature is too low, or the printer speed is too fast. Poor bonding weakens the print and causes layers to peel apart.

python

print_temperature = 190  # degrees Celsius
print_speed = 80  # mm/s
cooling_fan = True

if print_temperature < 200 and print_speed > 60 and cooling_fan:
    print('Warning: High chance of layer separation')

Output

Warning: High chance of layer separation

The Fix

To fix layer separation, increase the print_temperature to improve layer bonding, reduce the print_speed to allow layers to fuse properly, and reduce or turn off the cooling_fan to prevent rapid cooling. Also, ensure the printer bed is level and clean for good adhesion.

python

print_temperature = 210  # degrees Celsius
print_speed = 40  # mm/s
cooling_fan = False

if print_temperature >= 200 and print_speed <= 50 and not cooling_fan:
    print('Layer bonding improved, less chance of delamination')

Output

Layer bonding improved, less chance of delamination

Prevention

• Use the recommended temperature settings for your filament type.
• Print slower for better layer adhesion, especially on taller prints.
• Keep the cooling fan off or low during the first few layers.
• Ensure your printer bed is level and clean to avoid poor first layer adhesion.
• Enclose your printer or avoid drafts to maintain stable temperature.

Related Errors

Other common 3D printing issues include warping, where corners lift from the bed, and stringing, where thin strands of filament appear between parts. Warping can be fixed by improving bed adhesion and using a heated bed, while stringing is reduced by adjusting retraction settings.

Key Takeaways

Increase print temperature to improve layer bonding and reduce delamination.

Slow down print speed to allow layers to fuse properly.

Reduce or turn off cooling fans during early layers to prevent rapid cooling.

Keep the printer bed level and clean for good adhesion.

Avoid drafts and maintain stable printing environment temperature.