Start & End G-code for my Multi extruder printer
Hey guys,
My printer is Raise3D Pro2!
I have this Start code (and Tool Change G-code) that heats up both nozzles in the beginning in order for them to do the switch if needed.
But, when the print start or the switch has finished I need the other to cool down.
How do I achieve that?
Start G-code:
G90; use absolute coordinates
M83; extruder relative mode
M104 S[first_layer_temperature] ; set extruder temp
M140 S[first_layer_bed_temperature] ; set bed temp
M190 S[first_layer_bed_temperature]; wait for bed temp
M109 S[first_layer_temperature]; wait for extruder temp
T[initial_extruder] P0 ; select tool
M116 P[initial_extruder] ; wait for temperature
G21
M82
M107; fan off
G28 X0 Y0
G28 Z0
G92 E0; reset extruder position to 0
G1 Y5 X5 F3000 ;Move to position
G1 X60 E9.0 F1000 ;Start purge line
G1 X100 E12.5 F1000 ;Finish purge line
G92 E0; reset extruder position to 0
M117 Printing...
Tool Change G-code:
; Custom tool change G-code
T[next_extruder] P0 ; select tool
M116 P[next_extruder] ; wait for temperature
Thanks.
RE: Start & End G-code for my Multi extruder printer
I haven't worked with a multi-extruder setup, but I'd think the T parameter in the M104/M109 commands would do what you want. As you activate one, lower the other.
It is probably worth taking a look at gcode generated by ideaMaker and comparing the layer change gcode they use.
and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan
RE: Start & End G-code for my Multi extruder printer
@bobstro
I have attached a G-code from Ideamaker, if you can understand how they do it, it will be great because I don't 🤔Ideamaker_20mm_calibration_cube
RE: Start & End G-code for my Multi extruder printer
I just looked through the gcode. Temperatures are set for both extruders in lines 17-20 and the printer waits for each to come up to full temperature (205C). After that switch, I only see filament being retracted on tool changes. I don't see any temperature adjustments on tool change. Are you certain the temperature of the unused hotend is reduced after switching when slicing with ideaMaker?
Two thoughts:
- Does the Raise 3D printer implement any sort of on-board temp changes on tool change? Might there be a custom gcode command to set this? (I didn't notice anything.)
- I've looked through PrusaSlicer's settings and don't see anything to adjust temps on tool change.
Again though, I don't use a multi-extruder setup, so may be missing something obvious.
and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan
RE: Start & End G-code for my Multi extruder printer
@bobstro
You could be right, there might be something in the printer that adjust temps on tool change.
I know it will not be easy!