Non-extrusion of the granule

Not extrusion of the granule during 3D printing can be a frustrating problem, but there are steps to fix it. Here are some actions to take:

GCODE VERIFICATION: Make sure that the STL file used to generate the Gcode does not have any modeling defects, such as non-solid surfaces or geometry issues. Use 3D modeling software such as Blender or MeshLab to correct any defects in the model.

VERIFICATION OF SLICING PARAMETERS: Check parameters in the slicing software, such as nozzle diameter, filament diameter, material flow, extrusion temperature, and E-steps per millimeter. Make sure they are configured correctly for your extruder and the type of granule you are using.

ANALYZE PRINT MATERIAL: Analyze the  print material to understand the cause of the problem. If you are using fibrous or composite materials, a cap may occur in the extruder nozzle. It ALSO controls the moisture of the print granules, particularly if they are moisture-sensitive materials. Absorbed moisture can adversely affect print quality, causing problems such as burrs, blemishes, and changes in material properties.

NOZZLE CLEANING: If you suspect a clog in the nozzle, perform a nozzle cleaning procedure. This will help remove any obstructions.

TEMPERATURES TOO LOW: If the extruder temperatures are too low, the material may not flow properly. Check that the extruder temperature is set properly for the material you are using.

TEMPERATURES TOO HIGH: If the extruder temperatures were too high during the preheating process, the material may have hardened inside the extruder. In this case, follow these steps:

  • Remove the material in the extruder.
  • Take the air pressure out of the system.
  • Remove the material tube from the extruder.
  • It sucks up all the residual material located under the pellet sensor.
  • Load virgin material such as PLA or PP directly into the extruder.
  • Heat both the extruder and barrel to a high temperature (e.g., 250°C) to dissolve any residue within the system.
  • Perform an extruder cleaning procedure to ensure that the extruder is completely free of debris or residual material.

These steps should help you resolve the issue and resume printing effectively. It is important to pay attention to regular cleaning and maintenance of the extruder to avoid future blockages or obstructions during printing.