V4 / Duet2 / KISSlicer / DUAL EXTRUSION Y-bowden FEED and RETRACT?

[nurbie]

V4 set-up as above
KISSlicer Premium v1.6.3
I have dual enabled in the Duet config

Bear with me here, I've had multi-extruder KISS for one day, and this is my first dual extrude.

How the heck do you get the filament to feed and retract?
I just don't know where to start with the whole retraction/feed issues
According to the SMCNC CURA setup you pull the filaments away from the Y-connector 40mm to start.
This would imply that something then tells the machine to push/pull the filaments accordingly.
Help me make a new SMCNC Guide for KISS community!

NO idea if I need to modify KISS, Duet config, or BOTH?

I've got KISS generating a test with short pillar:

Guessing magic has to happen here:

and here:

CAN SOMEONE PLEASE POINT ME IN THE RIGHT DIRECTION/S?
There must be some documentation somewhere on how this is achieved as you guys have been doing multi-extruder prints for at least 2years, right?

Hopefully I can lure Hackney(HA!)
get it?
cast,
tug, tug, tug

Thanks in advance!!

UPDATE:
I got the Printer and Extruder settings from SMCNC for CURA, so if I put them into KISS correctly they should work(?)
Can anyone point out the correct KISS locations for these?

per email:
The code in the machine settings(first pic) is where the filament prime, retracts, and at the end retract back so both filaments are above the Y are set up.






I've got this so far:

[nurbie]

well, this doesn't work:
KISSLICER DUAL CONFIG TEST_01

PREFIX
; [mm] mode
G21
; absolute mode
G90
; Home
G28
; Heated bed control
M140 S<BED>
; Absolute E
M82
M203 Z24000
G28 ;HOME
G1 Z15.0 F6000 ;MOVE PLATFORM DOWN 15MM
;PRIME EXTRUDER
G92 E0

PREHEAT
; heat the (next, then current) extruder without waiting
;M104 S<TEMP> T<EXT+0>
; Uncomment the previous line to enable preheat

SELECT NEW EXT & WARM
; Select new extruder
T<EXT+0>
; Warm it up, and wait till it's warm
M109 S<TEMP>
; You may want to prime some filament here
G1 X0 Y70 F20000
T0 PO
G92 E0
G1 E160 F3000
G92 E0
M18 E1

WARM SAME EXT
; Warm it up, and wait till it's warm
M109 S<TEMP>

COOL SAME EXT
; Cool it, no need to wait
M104 S<TEMP>

COOL & RETIRE OLD EXT
; Deselect the (same) extruder (usually to cool)
M104 S<TEMP>
; PREP EXTRUDER FOR SWAP + RETRACT FILAMENT
G1 X0 Y70 F20000
G91
G1 Z1 F20000
G90
G92 E0
G1 E-160 F5000
G92 E0


N [*] LAYERS
; Maybe re-home X & Y?


POST FIX
; Maybe cool the bed?
M140 S0
; Maybe move to some safe location?
G1 F1200 X0 Y0 Z<Z+5.0>
M104 S0
M140 S0
;RETRACT ALL FILAMENT
G92 E1
G1 E-160 F3000
G28
M84
M203 Z24000


PAUSE & RESUME
; Pause then Resume
; usually M0 (typical) or M1 (less common) or M226 (least portable)
M0

>>>>>>>>>>>>>>>>>>>>>>>>>>>

I also tried putting the second extruder's gcode in the Material Gcode section for the E1 ext material...
Doesn't work

[dc42]

You can do the retract/load either in the slicer tool change scripts, or in the Duet tool change files. If you do it in the Duet tool change files, it should work for all slicers.