Prime Tower without Z-move #2136

New Issue

MrUnknownDE · 2026-04-06T00:13:58+02:00

MrUnknownDE commented

2026-04-06 00:13:58 +02:00

Originally created by @FrederickAlt on 9/19/2025

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.0

Operating System (OS)

Windows

OS Version

Windows (Probably all others too)

Additional system information

No response

Printer

Creality k1 with CFS

How to reproduce

Generate a Prime Tower
Read the G-Code for the Prime Tower

Actual results

There is no Z-Movement implemented for the Prime Tower. Following is a snippet that includes the toolchange and the wipe tower G-Code.

T1
; filament start gcode
SET_PRESSURE_ADVANCE ADVANCE=0.02; Override pressure advance value
G1  X184.750 Y185.250 F36000
G1  X184.250 Y184.400  
G11 ; unretract
G4 S0
G1  Y184.900 
; CP TOOLCHANGE WIPE
;WIDTH:0.5
G1  X165.250  E0.7221 F1188
;WIDTH:0.5
; WIPE_TOWER_END
G1 F36000
G4 S0
G92 E0
; CP TOOLCHANGE END
;------------------

This can be an Issue if the implementation of FIlament change on the 3d printers end does not return the execution to the G-Code with the exact same Z-Offset as was set before the toolchange. This scenario seems not unrealistic as it would be desirable to move to the next object (the prime tower) with an elevated Z-Offset, then lower it to the real offset, then print.

Expected results

"G1 Z..." before the prime towers, in the provided snippet before "G1 X165.250 E0.7221 F1188".

Project file & Debug log uploads

test.zip

Checklist of files to include

Log file
Project file

Anything else?

No response

*Originally created by @FrederickAlt on 9/19/2025* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.0 ### Operating System (OS) Windows ### OS Version Windows (Probably all others too) ### Additional system information _No response_ ### Printer Creality k1 with CFS ### How to reproduce 1. Generate a Prime Tower 2. Read the G-Code for the Prime Tower ### Actual results There is no Z-Movement implemented for the Prime Tower. Following is a snippet that includes the toolchange and the wipe tower G-Code. ``` T1 ; filament start gcode SET_PRESSURE_ADVANCE ADVANCE=0.02; Override pressure advance value G1 X184.750 Y185.250 F36000 G1 X184.250 Y184.400 G11 ; unretract G4 S0 G1 Y184.900 ; CP TOOLCHANGE WIPE ;WIDTH:0.5 G1 X165.250 E0.7221 F1188 ;WIDTH:0.5 ; WIPE_TOWER_END G1 F36000 G4 S0 G92 E0 ; CP TOOLCHANGE END ;------------------ ``` This can be an Issue if the implementation of FIlament change on the 3d printers end does not return the execution to the G-Code with the exact same Z-Offset as was set before the toolchange. This scenario seems not unrealistic as it would be desirable to move to the next object (the prime tower) with an elevated Z-Offset, then lower it to the real offset, then print. ### Expected results "G1 Z..." before the prime towers, in the provided snippet before "G1 X165.250 E0.7221 F1188". ### Project file & Debug log uploads [test.zip](https://github.com/user-attachments/files/22422223/test.zip) ### Checklist of files to include - [ ] Log file - [x] Project file ### Anything else? _No response_

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Due Date

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Dependencies

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Reference: github/OrcaSlicer#2136