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D4fnk

Octoprint & pre printing options ?

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Hey,

I just started using Octoprint to monitor and control my Ultimaker 2 Extended+ but i have an issue : when i start a printing from Octoprint there is no warmup (either bed or nozzle) and no first layer for the print, it starts the object directly. I switched to RepRap (Marlin/Sprinter) in Cura but it didn't change anything. Also, i have no issue at all when printing from the SD.

I googled it and it seems that there are no way to automatically pre heat the nozzle/bed and extrude some filament (i.e starting the same way as a print from the SD card) and that i have to do it manually for each print, can anyone confirm ?

Or is there a possibility to script it in the Before Print options ?

Thank you

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If you set Cura to RepRap (Marlin/Sprinter) it should generally work. Make sure it uses something like this as the start gcode:

 

G21 ;metric values

G90 ;absolute positioning

M82 ;set extruder to absolute mode

M107 ;start with the fan off

G28 X0 Y0 ;move X/Y to min endstops

G28 Z0 ;move Z to min endstops

G1 Z15.0 F{travel_speed} ;move the platform down 15mm

G92 E0 ;zero the extruded length

G1 F200 E3 ;extrude 3mm of feed stock

G92 E0 ;zero the extruded length again

G1 F{travel_speed}

M117 Printing... ;Put printing message on LCD screen

 

Alternatively you can also add this to the beginning of your .gcode file.

If you are using Cura 2.1, check your machine's .json file found in "C:\Program Files\Cura 2.1\resources\machines".

Hope this helps.

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