How to add "Purge Bubble" to Mini+ startup gcode
I use a modified PrusaSlicer startup gcode for my MK3S+ printer that does a nice quick purge bubble then a thick intro line. Don't remember where I got it from, most likely from the Pretty Profiles that I tweaked.
But now I have a new Mini+, and would like to do the same style purge bubble and thick intro line, but needed some guidance.
Here is my MK3S+ intro line code:
M862.3 P "[printer_model]" ; printer model check M862.1 P[nozzle_diameter] ; nozzle diameter check M115 U3.9.3 ; tell printer latest fw version G90 ; use absolute coordinates M83 ; extruder relative mode M140 S[first_layer_bed_temperature] ; set bed temp M109 S160 ; Set extruder temp before bed level M190 S[first_layer_bed_temperature] ; wait for bed temp G28 W ; home all without mesh bed level G80 ; mesh bed leveling set 3x3, 5x5, or 7x7 in settings menu G1 Y-3.0 Z0.6 F1000.0 ; go outside print area M109 S[first_layer_temperature] ; wait for extruder temp ; Purge Bubble and intro line G92 E0.0 G1 Z0.2 E8 ; Purge Bubble G1 X60.0 E9.0 F1000.0 ; intro line G1 X100.0 E12.5 F1000.0 ; intro line G92 E0.0
And here is the stock code in the Mini+:
M862.3 P "[printer_model]" ; printer model check G90 ; use absolute coordinates M83 ; extruder relative mode M104 S170 ; set extruder temp for bed leveling M140 S[first_layer_bed_temperature] ; set bed temp M109 R170 ; wait for bed leveling temp M190 S[first_layer_bed_temperature] ; wait for bed temp M204 T1250 ; set travel acceleration G28 ; home all without mesh bed level G29 ; mesh bed leveling M204 T[machine_max_acceleration_travel] ; restore travel acceleration M104 S[first_layer_temperature] ; set extruder temp G92 E0 G1 Y-2 X179 F2400 G1 Z3 F720 M109 S[first_layer_temperature] ; wait for extruder temp ; intro line I want to change G1 X170 F1000 G1 Z0.2 F720 G1 X110 E8 F900 G1 X40 E10 F700 G92 E0 M221 S95 ; set flow
Would I just change G1 Z0.2 F720 and add an E8 (or whatever number I want for the size of the bubble) and change to F1000? And same for other lines? Increase the E amount and add F1000?
So it would become:
; intro line G1 X170 F1000 G1 Z0.2 E8 F1000 ; added E8 to add purge bubble G1 X110 E9 F1000 ; increased E and F G1 X40 E12 F1000 ; increased E and F G92 E0
Does that look correct? And will I need to reset the F back to F700?
Thanks all!
RE: How to add "Purge Bubble" to Mini+ startup gcode
It looks to me like the G1 Z0.2 is lowering the nozzle to first layer height. I'd almost want to have it a touch higher, extrude the bubble, then move over a bit and do the stock moves from G1 Z0.2 on.
Mini+ (kit) - Revo Micro | Antler Cooling | WiFi (4.4.0RC1)