GitHub Gist: instantly share code, notes, and snippets. Cura, and most slicers, have the ability to use placeholders (basically variables or maybe better: constants). These placeholders are substituted with the correct value upon slicing. So it heats extruder 1 instead of 2. I am trying to set up the machine settings for my BigBox Dual. I have updated my startup g-code to incorporate several functions that I want to use on every print. prime and wipe extruder. salfterm, these two lines from your Start code caught my attention: M190 S[first_layer_bed_temperature] ; wait for bed temp M109 S[first_layer_temperature] ; wait for extruder temp. run fan for 8 minutes, then turn off. cura will insert preheat code before start code. Enter the M503 command, ... the M92 Exxx.xx command that includes the calibrated extruder value can be added in the start gcode of your slicer. Mega X Start G-code 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{speed_travel} ;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{speed_travel} M117 … This way, the extruder value will be loaded each time you start a new print. If you add a line T1 in start.gcode to select extruder 2 it is not working right, because Cura export gcode sets extruders and bed temperatures before start.gcode! Anet A8 start end gcode. Either when printing via USB or a G-code file on an SD card. By default cura heats up both extruders although only one extruder is used. Example: M140 S52.000000 M109 S210.000000 M190 S52.000000 At a minimum, the extruder and heated bed (if applicable) need to be set to proper temperatures and the tool head needs to be homed. Cura 15.06 removed the ability to manually add start/end GCode in the GUI, but you can still do it by editing the machine specific .json file for your printer which includes separate lines for start/end gcode concatenated onto a single line with line breaks "\n" between statements. Start G-Code turn the fan on. As you know, before a print, Cura start GCode resets the extruder, moves it to the side, draws a line, moves it over and draws another before printing. The purpose of the start.gcode script is to prepare the 3D printer for producing the desired object. Cura 15.06. The issue is that as it travels from home to the side of the bed, it start to dribble filament at a diagonal. In Cura (see attached file), I have found them unnecessary. Start and End G-code for Ender 5 on Cura. I think that start.gcode should always be the first code in final gcode. Start and End G-code for Ender 5 on Cura. on finish: extend bed forward for easy model removal. Get current extruder steps. 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