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# Description Filament changes on the Prusa CORE One MMU3, MK4 MMU3 and CORE One INDX now use the settings PrusaSlicer 3.0 ships for them. On the MMU3 printers these are Prusa's per-material ramming, load and unload speeds, cooling moves and stamping. On the INDX they are Prusa's multi-tool ramming and 10 mm³ minimal purge, plus a filament start G-code that restores pressure advance after the purge station disables it and then sends `M573 R`, as PrusaSlicer does. This supersedes #16008. Thanks to @nuclearmistake for that work, which identified what these printers need for reliable filament changes. This PR reaches the same goal with the existing `include` mechanism rather than new printer-level overrides. The values live in shared templates in the Prusa bundle (PLA and PETG families with High Flow ramming variants, and one for the INDX), and the filament presets include them, so each material keeps its own values as in PrusaSlicer. For the MK4 MMU3, ten small presets inherit the MK4 filament tunes and include the templates; they cover the materials PrusaSlicer offers with the MMU3 and replace the library generics as that printer's defaults. The CORE One MMU3 0.6 nozzle now uses the 0.6 Generic PLA and Prusament rPLA profiles, as in PrusaSlicer. Unlike #16008, filaments from Orca's shared library keep Orca's defaults on these printers. No engine change, and printers without an MMU3 or INDX are unaffected. MK4 MMU3 users also get the MK4's material tuning, such as temperatures and cooling, from the new presets. # Screenshots/Recordings/Graphs <!-- > Please attach relevant screenshots to showcase the UI changes. > Please attach images that can help explain the changes. --> ## Tests <!-- > Please describe the tests that you have conducted to verify the changes made in this PR. --> <!-- > A guide for users on how to download the artifacts from this PR. --> [How to Download Pull Requests Artifacts for Testing](https://www.orcaslicer.com/wiki/how_to_download_pr_artifacts)