Prusa Research Original Prusa i3 MK2S 1.75mm, User Manual, Page: 26 / 67

7 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
​
6.3.8
Loading the filament into the extruder ​ .
Do not let the preheated printer idle. When a printer is preheated and non-printing
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 LCD-knob and choose the ​ Print 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 LCD-knob and
choose “Continue” option. Confirm and printing will resume.
7.1 Removing objects from the printer.
● When printing is finished let the nozzle and heatbed cool down before removing the
printed object. Always handle the printed objects when temperature of the bed and
nozzle drop to the room temperature, when the bed is hot objects are very hard to
remove. Pull the bed towards you and remove the object gently.
● If you experience any troubles removing the object (especially the small ones) you
can use a flat tool like a spatula ​ with rounded corners ​ to prevent damage of PEI ​ .
Slide the spatula under the corner of the object and gently push, until the print pops
of.
Pict. 12 - Removing the model from PEI print surface with spatula
26