Prusa i3 Hephestos Printing Handbook - page 16
6 Printing
● Make sure that the
nozzle
and the bed are heated to the desired temperature. If you
forget to
preheat
the
printing
nozzle
and the bed before
printing
the
printer
will
automatically check the temperatures of the
nozzle
and the bed;
printing
will start
when desired temperature is reached it can take several minutes. However, we
recommend preheating the
printer
beforehand as described in the chapter
Do not let the preheated printer idle. When a printer is preheated and nonprinting
material in an extruder degrades over time it may cause the nozzle to jam up.
● Watch the first few printed layers to be sure
filament
has attached to the bed
properly
(5 to 10 minutes).
● Press the LCDknob and choose the
from SD
option from menu, press to
confirm and pick the desired
model
model_name.gcode
. Printer will start
printing
the
object.
The
filename (.gcode) must not contain any special characters
otherwise the
printer
is not able to display the file on the LCD. If you remove the SD while printing,
printer will pause automatically. When you reinsert the SD, press the LCDknob and
choose “Continue” option. Confirm and printing will resume.
● Printer firmware allows the
filament
change during the
printing
. This option is
useful when the
filament
is running out and you can change the spool and continue
with
. Choose the
Tune
and then
Change
filament
option during the
.
Printer will pause the
printing
process, unload the
filament
and signals you with the
sound to insert the new
filament
. When you confirm the
filament
was loaded
correctly
printing
process will continue.
● Other options to use the
filament
change is a
multicolored
. The procedure is
the same as above choose the
Tune
and then
Change
filament
option during the
. Printer will pause the
printing
process, unload the
filament
and signals you to
insert the new
filament
.
● When you change the
filament,
LCD displays the message
“Changed correctly?”
with three options:
1. “Yes”
Everything went ok and
printing
can continue. Check if the new
color
is
clear without any remains of the previous
filament
if yes, choose this option
to continue
printing
with a new
color
.
2. “Filament not loaded”
If the new
filament
was not loaded
properly
, choose
this option and the
printer
will start the automatic
filament
load
again. When
the
filament
is loaded
properly
, you can choose the “Yes” option and the
printing
will continue with a new
color
.
3. “
Color
not clear”
Filament
was loaded but the
color
is still spotted by a
previous
filament
. Press the button with this option and the
printer
will extrude
more
filament
from the
nozzle
. When the
color
is pure without any remains of
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