How to use multi-material with Klipper-macro based tool changing?

[goeland86]

Hi,

I've set up my 3D Chameleon printer to use Klipper macros for any and all tool changing. I finished testing the macros and they do exactly what I need them to.

Now my issue is that, well, SuperSlicer seems to inject color priming code before the start gcode, and then tries to outsmart me in how to manage color changing.

Is there a way I can tell SuperSlicer to just use T0, T1, T2 and T3 as the only gcode needed for color swaps? I may just be blind as to how to do so, which is why I didn't open up an issue yet.

[supermerill]

put your macro call into the toolchange custom gcode, and it should be good.
as en exemple, you can put T{next_extruder} or TOOLCHANGE={extruder_name} (if you set an extruder_name for each extruder)

See tooltip for more information: it put automatically the TX if there is nothing inside it.

For the color priming, you can disable it, i guess? Depends on what you talked about.

[goeland86]

I've done that, but it seems to be adding initial purge prep before the initial stuff is happening?

This is the header right after the embedded thumbnail string:

; TODO: check the size of the extruder and the y-bar clearance. Optimize & test supports.

; external perimeters extrusion width = 0.84mm
; perimeters extrusion width = 0.84mm
; infill extrusion width = 0.84mm
; solid infill extrusion width = 0.84mm
; top infill extrusion width = 0.84mm
; first layer extrusion width = 0.84mm

; external perimeters extrusion width = 0.84mm
; perimeters extrusion width = 0.84mm
; infill extrusion width = 0.84mm
; solid infill extrusion width = 0.84mm
; top infill extrusion width = 0.84mm
; first layer extrusion width = 0.84mm


G1 Z0.3 F18000
;_STORE_FAN_SPEED_WT
;HEIGHT:0.3
;TYPE:Wipe tower
;WIDTH:0.75
;--------------------
; CP PRIMING START
;--------------------
M220 S100
G1  X6.000 Y0.385   F7200
; Filament-specific end gcode 
;END gcode for filament

T1
;_TOOLCHANGE 1

G1 F18000
G1  X6.000 Y0.385  
; Filament gcode

G1  X6.000 Y0.385 Z0.3
G4 S0
M220 S100
; CP TOOLCHANGE WIPE
G1  X66.000  E5.1309 F95040
G1  X64.875 Y1.135   E0.1156
G1  X6.000  E5.0347
G1  X64.875  F7200
; CP TOOLCHANGE UNLOAD
;WIDTH:0.9
G1  X6.750 Y2.335  
SET_PRESSURE_ADVANCE ADVANCE=0
G1 F1580
G1  X13.332  E0.686
G1 F1628

My issue here is that it's doing these extruder and gantry related moves before print_start, where I home and initialize the tool change setup to be ready for this. If it's a bug, I'll happily submit an issue.

[goeland86]

Attaching the .3mf project file for convenience in testing/understanding with my setup.
What I expect would be something like:

PRINT_START EXTRUDER_TEMP=215 BED_TEMP=65
T0
<paths for T0>

T1
<paths for T1>

Thanks for the help clarifying this.
Dice_holes_project.zip