T1 Offset on dual extrusion

koreandi

Hi there.

I finished building up my Kodak Portrait printer with the DUET Wifi Board. It works all fine until now.
I want to enable my second Nozzle but don´t get it.
I put in the T1 offsets in config.g:

; Tools
M563 P0 D0 H1 F0                                  ; define tool 0
G10 P0 X0 Y0 Z0                                   ; set tool 0 axis offsets
G10 P0 R100 S200                                  ; set initial tool 0 active and standby temperatures to 0C
M563 P1 D1 H2 F0                                  ; define tool 1
G10 P1 X-28 Y0 Z-2.0                              ; set tool 1 axis offsets
G10 P1 R100 S200                                  ; set initial tool 1 active and standby temperatures to 0C

By manually testing the Z-offset it sees to work.

Homing Z with T0 (Probe is nozzle-triggered)
Check nozzle height of T0 --> Okay
Change to T1
Move T1 to bed
Check nozzle height --> Okay

But if i run a S3D sliced file my Nozzle T1 will drive a few mm against my bed. It seems that the Z-offset is not recognized.
Any clue what I did wrong?
Is there any file I should provide you?

Compared to my T0:
X: T1 is about 28 mm left of T0.
Z: T1 is about 2 mm closer to the bed when activated
Y: T1 is nearly the same position as T0

In S3D there is nothing set in Offsets.

Greetings
Andreas

TC

@koreandi first you should manually switch between Tools using T0 P0 and T1 P0 and check if the Coordinates displayed in DWC change as expected

koreandi

Yes, by switching manually the X-coordinate changes for 28 mm and also the Z-axis moves 2mm as expected.

koreandi

If important:
I have nothing declared in tfreex.g or tprex.g files.
I put in my toolchange script in tpost

tpost0.g:

; tpost0.g
; called after tool 0 has been selected
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Wed Sep 30 2020 18:35:35 GMT+0200 (Mitteleuropäische Sommerzeit)
; Wait for set temperatures to be reached
G91				;set to relative
G1 Z5 F9999		;move Z 5 mm up
G90				;set to absolute
G1 X195 F9999	;move quickly near switch position
G1 X215 F250	;switch to E1
G1 X195 F9999	;move back
G91				;set to relative
G1 Z-2 F9999	;go back to initial Z-Position
G90				;set to absolute
M116 P0			;wait for extruder

tpost1.g

; tpost1.g:
; called after tool 1 has been selected
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Wed Sep 30 2020 18:35:35 GMT+0200 (Mitteleuropäische Sommerzeit)
; Wait for set temperatures to be reached
G91				;set to relative
G1 Z5 F9999		;move Z 5 mm up
G90				;set to absolute
G1 X0 F9999		;move quickly near switch position
G1 H1 X-14 F250	;switch to E0
G1 X0 F9999		;move back
G91				;set to relative
G1 Z-5 F9999	;go back to initial Z-Position
G90				;set to absolute
M116 P1			;wait for extruder

koreandi

Has anyone else a clue?

Phaedrux

@koreandi said in T1 Offset on dual extrusion:

G91 ;set to relative
G1 Z5 F9999 ;move Z 5 mm up
G91 ;set to relative
G1 Z-2 F9999 ;go back to initial Z-Position

@koreandi said in T1 Offset on dual extrusion:

G91 ;set to relative
G1 Z5 F9999 ;move Z 5 mm up
G91 ;set to relative
G1 Z-5 F9999 ;go back to initial Z-Position

These relative moves are just raising the Z further and further. raise by 5, lower by 2? That doesn't seem right?