How to fix Under – Extrusion
Under-extrusion is when
the printer is unable to supply the right amount of material. You’ll know if
your printer is under-extruding as you’ll see missing layers, very thin layers,
or layers that have random dots and holes in them. The extrusion of filament is
too less than normal.
Please follow the following instructions to fix the
under – extrusion.
Feeder [Bowden Mechanism]
How to predict whether the
tension is proper or not?
This can easily be diagnosed by
taking the material out of the 3D printer and checking if there are visible
marks on the material.
2) Bowden Tube
material has passed the feeder, it will be forwarded through the Bowden tube.
It’s possible the material could experience friction in the Bowden tube,
leading to under-extrusion.
if the Bowden tube is not get locked properly with a notch on the e3d also
leads to under–extrusion.
printing for a long time or switching materials from one to another. The hot
end nozzle should be cleaned at proper Temperature.
The following temperature for each material for cleaning nozzle is mentioned below.
PLA - 210 to 240 degrees at hot end
ABS - 240 degrees at the hot end recommended.
HIPS -230 degrees at the hot end recommended.
PETG – 235 degrees at the hot end recommended.
cleaning the nozzle first preheat the nozzle to the corresponding temperature
and unload the filament from the nozzle. Use a long T shape 1.5mm Allen key to
clean the nozzle from the top.