Starting accidentally another action during the print (e.g. XYZ calibration, switching sheet profiles, ...) can cause damage to the printer. This is why during the entire printing phase most of the menu items are unavailable. The safety of the user and the printer is the biggest priority.
However, some parameters can be adjusted (e.g. temperatures, flow, sound mode, ...) and those are shown in a special list called "Tune menu". The list differs from printer to printer and is expanded based on the new features and customer feedback.
Example of the "Tune menu" on the MK3S:
Example of the "Tune menu" on the MINI:
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5 comments
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Alexander
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I often set the speed to 175, and the prints still look very good. If I now want to incorporate this into my profile, which values will be affected by this change? Unfortunately, "speed" is too general.
Rees
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Is there any way that all live tune changes can be maintained between filament changs? At present, if I change the fan speed it is maintained for the whole print; however, other factors, namely nozzle temp, seem to reset to slicer defined values after every filament change. This is a pain if using soluble supports and you just want to tweak the temp a bit.
Giuliano - Official Prusa CS
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Hello. The live tunings will just reset as indicated in the gcode after every filament change. If you need to keep certain settings constant during a print, you might change them in the Prusa Slicer, before creating the gcode.
xenon
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during test-printing extrusion width samples (vase mode) with my mk3s i noticed that the flow parameter changed to 95. shouldnt it remain 100? the only 95 related to extrusion i found in prusaslicer was bridge flow rate...which seems unrelated. documentation on this menu could be a bit more expansive on how the values are used, what the defaults are, where the currently shown values come from
Official Prusa CS
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Hi, we change the flow to 95 to prevent overextrusion. It's an old, legacy thing back from when MK3 was released :)
Julian
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The Nozzle and heatbed are obviously the temperatures of the nozzle and bed respectively. Are we to gather from the above that the speed is a percentage. I.E changing the speed to 70 on this menu changes all the speeds by a factor of 0.7?