damaged if the nozzle is too near to the
tape, then printed parts won’t adhere
to the bed or the first layer is not flat.
So you should often change the tape.
4. The driving gear is a very important
set for extruder the filament. During
extruding, some very little filament will
adhere to the gear and fill the groove,
then the gear cannot extrude the
filament fluently because the friction
To be changed
OK
