Description of the problem: Once the print is completed if the layers do not adhere to each other consistently resulting in horizontal cracks. Some layers may even start to peel off.
Material: Any type of material.
Layer adhesion is dependent on the extrusion temperature. Try to raise both the bed and extruder temperatures by 5 to 10C to increase layer adhesion. Older filament not stored properly can absorb moisture. To avoid moisture absorption, store your filament in a cool, dark and dry place, such as a sealed container with a few packs of desiccant.