Prime tower with "No sparse layers" enabled doesn't respect z_offset printer setting #1391

New Issue

MrUnknownDE · 2026-04-05T17:32:59+02:00

MrUnknownDE commented

2026-04-05 17:32:59 +02:00

Originally created by @Dalamar on 12/10/2025

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.1

Operating System (OS)

macOS

OS Version

macOS 15.7.2 (24G325)

Additional system information

No response

Printer

Flashforge Adventurer 5M Pro (Klipper Mod)

How to reproduce

Set z_offset to 0.25 in printer settings
Go to Multimaterial
Enable Prime Tower
Enable No sparse layers (beta)
Go to Quality
Set Layer height: 0.2
Set First layer height: 0.3
Slice and check GCODE for Z value in the begining of first layer of the prime tower

Actual results

G1 Z.2

This resulted in nozzle clogg as it colides with the bed and filament can't go freely. Also slightly damaging the bed.

Expected results

G1 Z.45

Project file & Debug log uploads

report_prime_tower_do_not_respect_z_offset.3mf.zip

Checklist of files to include

Log file
Project file

Anything else?

No response

*Originally created by @Dalamar on 12/10/2025* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.1 ### Operating System (OS) macOS ### OS Version macOS 15.7.2 (24G325) ### Additional system information _No response_ ### Printer Flashforge Adventurer 5M Pro (Klipper Mod) ### How to reproduce 1. Set z_offset to 0.25 in printer settings 2. Go to Multimaterial 3. Enable Prime Tower 4. Enable No sparse layers (beta) 5. Go to Quality 6. Set Layer height: 0.2 7. Set First layer height: 0.3 8. Slice and check GCODE for Z value in the begining of first layer of the prime tower ### Actual results G1 Z.2 This resulted in nozzle clogg as it colides with the bed and filament can't go freely. Also slightly damaging the bed. ### Expected results G1 Z.45 ### Project file & Debug log uploads [report_prime_tower_do_not_respect_z_offset.3mf.zip](https://github.com/user-attachments/files/24065848/report_prime_tower_do_not_respect_z_offset.3mf.zip) ### Checklist of files to include - [ ] Log file - [x] Project file ### Anything else? _No response_

MrUnknownDE closed this issue

2026-04-05 17:32:59 +02:00

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Reference: github/OrcaSlicer#1391