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Start Gcode - 4.0 vs 4.2 (Ender 3)

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Posted · Start Gcode - 4.0 vs 4.2 (Ender 3)

I've noticed that with Cura 4.2, my temps did not get set on my printer. When checking the Start Gcode, there is nothing to set the temps. 

I've realised the start gcode from 4.2 is quite different to 4.0. 
Should I be adding the temp gcode from Cura 4.0 into my start gcode in 4.2?

Cura 4.0:

; Ender 3 Custom Start G-code
M104 S{material_print_temperature_layer_0} ; Set Extruder temperature
M140 S{material_bed_temperature_layer_0} ; Set Heat Bed temperature
M190 S{material_bed_temperature_layer_0} ; Wait for Heat Bed temperature
M109 S{material_print_temperature_layer_0} ; Wait for Extruder temperature
G28 ; Home all axes
M117 Purge extruder
G92 E0 ; Reset Extruder
G1 Z2.0 F3000 ; Move Z Axis up little to prevent scratching of Heat Bed
G1 X0.1 Y20 Z0.3 F5000.0 ; Move to start position
G1 X0.1 Y200.0 Z0.3 F1500.0 E15 ; Draw the first line
G1 X0.4 Y200.0 Z0.3 F5000.0 ; Move to side a little
G1 X0.4 Y20 Z0.3 F1500.0 E30 ; Draw the second line
G92 E0 ; Reset Extruder
G1 Z2.0 F3000 ; Move Z Axis up little to prevent scratching of Heat Bed
M117 By your command!
; End of custom start GCode

 

Cura 4.2:

M201 X500.00 Y500.00 Z100.00 E5000.00 ;Setup machine max acceleration
M203 X500.00 Y500.00 Z10.00 E50.00 ;Setup machine max feedrate
M204 P500.00 R1000.00 T500.00 ;Setup Print/Retract/Travel acceleration
M205 X8.00 Y8.00 Z0.40 E5.00 ;Setup Jerk
M220 S100 ;Reset Feedrate
M221 S100 ;Reset Flowrate

G28 ;Home

G92 E0 ;Reset Extruder
G1 Z2.0 F3000 ;Move Z Axis up
G1 X10.1 Y20 Z0.28 F5000.0 ;Move to start position
G1 X10.1 Y200.0 Z0.28 F1500.0 E15 ;Draw the first line
G1 X10.4 Y200.0 Z0.28 F5000.0 ;Move to side a little
G1 X10.4 Y20 Z0.28 F1500.0 E30 ;Draw the second line
G92 E0 ;Reset Extruder
G1 Z2.0 F3000 ;Move Z Axis up

 

 

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Posted · Start Gcode - 4.0 vs 4.2 (Ender 3)

If there is no referrence to those temperatures, cura will insert them before the start gcode.

At least this was the logic in the 4.1.

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Posted · Start Gcode - 4.0 vs 4.2 (Ender 3)

My first print with Cura 4.2.1 didn't insert the correct temperatures. I inserted the old gcode, tested, and it worked. 

I repasted the cura 4.2 start code, and tested - and then the temps worked. 

 

Don't know what happened to fix it. 

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