#14846·PrusaSlicer

Arrange is not able to arrange objects for MMU3 printer

Author: mixiczCreated Sep 15, 2025Updated Sep 19, 2026
Labelslegacy-issue

Description of the bug

When I set printer to "Original Prusa MK4S MMU3 0.4 nozzle" with several objects and press Arrange (uspořádat), only single object remain on printer bed even though there is plenty of space for all objects and wipe tower. I tried different adjustments of arrange parameters with no success (e.g. enable rotations or precise geometry). When I set printer to some non-MMU alternative like "Original Prusa MK4S 0.4 nozzle", arrange works perfectly fine though. This feature worked fine in previous version (2.9.2).

After arrange with MMU profile

Image

After arrange with non-MMU profile

Image

Project file & How to reproduce

project file: cord_spool-bugreport.zip

Checklist of files included above

  • Project file
  • Screenshot

Version of PrusaSlicer

2.9.3

Operating system

Debian GNU Linux Trixie (6.12.41+deb13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.41-1 (2025-08-12) x86_64 GNU/Linux)

Printer model

Prusa MK4S+MMU3S