Extruder pauses suddenly

while 3d printing, the extruder stops suddenly for a while and then resumes working again normally in all layers (not only first layer)and the nozzle leaves some spaces without filament as shown in the image image

Comments

  • Could be not enough force so it stalls. Maybe temperature is not high enough so it can not put new filament through until it is melted a bit more. Could also be overheating of stepper driver so it pauses until cool again to extrude.
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