Prusa i3 MK2S KIT - P Rint S Peed V Ersus P Rint Q Uality; U SB C Able a Nd P Ronterface

7.2.5 Print speed versus print quality
Printing a small object takes a few minutes, but printing larger models is time consuming -
there are prints taking tens of hours. The overall printing time can be changed in different
ways. First way to alter the printing speed is changing layer height in Slic3r - upper right
windows shows Print settings option. Default setting is 0.20 mm (NORMAL), you can speed
up the printer by choosing the 0.35 mm (FAST) option. Raising speed will result the model to
be less detailed with visible layer borders. If you prefer quality over speed, choose 0.10 mm
(DETAIL) option. Printing time will double but the model gets the extra detail. Again, higher
printing speed results in less detailed model
.
Pict.   14   -   Print   quality   vs   print   time
Speed can be changed also while printing. LCD shows the FR 100 % item - it’s actual print
speed (feed rate). By turning the LCD-knob clockwise you can increase the print speed up to
999 %. However, we do not advise to increase the speed over 200 %. Watch the results of
increased speed on the printed model and adjust the speed eventually.
When increasing the speed always check the model is cooled properly - especially
when printing small object from ABS increased speed causes the distortion
(sometimes called “warping”) of the model. You can prevent this issue by printing
more similar objects together - layer printing interval is long enough to prevent this
issue.
If the model shows lower quality than desired you can decrease the printing speed - turn the
LCD-knob counterclockwise. Minimum usable printing speed is around 20 % of nominal
speed.
7.2.6 USB cable and Pronterface
We strongly recommend to use LCD panel while printing on Prusa i3 MK2S -
Pronterface doesn’t support all functions of a new firmware (e.g. filament change
while printing).
Keep in mind that when printing from the Pronterface the computer must be connected to
the printer during the whole printing process - computer must be prevented from sleep,
hibernation or shutting down. Disconnecting the computer during the print ends the printing
without the option to finish the object.
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