UltiMaker Cura 5.3.0

This release does not yet contain the new tree support implementation by @ThomasRahm. You can download a special Cura version for that here.

Interlocking Structure Generation This new setting enables you to interlock multiple materials together, even if those materials are not compatible, contributed by @BagelOrb. Try it for yourself with this test model.

Brim per Material A brim can now be printed with multiple materials in the same model, contributed by @BagelOrb

Updated Recommended Print Settings Menu The number of settings available in the recommended has expanded. The redesign will make it easier to use intent profiles or save custom profiles.

Other new features and improvements.

• Improved the Zseam behavior so Hide Seam is generated less randomly.
• Fixed the order in which concentric top/bottom patterns are printed.
• Replaced mentions of Ultimaker by UltiMaker to correctly reflect the merger.
• Updated Load Project window with a new design.
• Added tooling to automatically generate translation files to reduce the chance of human error.
• Added quality type to slice meta-data so it can be displayed in the Ultimaker Digital Factory.
• Added a new way to update profiles by adding a Save/Compare Settings Button in custom window.
• Improved onboarding so it is easier to add your first cloud printer or a non-UltiMaker printer.
• Included options to download .MSI and .PKG for easier software distribution.
• Smoothed some support generation, so support is generated less jittery.
• Reduced unnecessary support generation for small overhang regions, like textures.
• Improved support generation so the support doesn't fold around the model.
• Reduced stringing for Lift Head setting by removing the move in XY.
• Added a Minimum Layer Time Temperature setting.
• Added settings for Support Interface Wall Line Count, Support Roof Line Count, and Support Floor Line Count.
• Added Brim Inside Avoid Margin setting, contributed by @BagelOrb
• Added prefix 'Printing' to post processing plugin script "DisplayFilenameAndLayerOnLCD" contributed by @brunohenriquy
• Added Enable, G-code Before, and G-code After To Filament Change, contributed by @victornpb
• Added support for per-object retraction settings, contributed by @jeremysalwen
• Updated PauseAtHeight so M18 becomes M84 when disarming, contributed by @Cycov
• Added an option to keep stepper motors engaged to Pause At Height, contributed by @Cycov
• Added an option to Beep at Pause to Pause At Height, contributed by @Cycov
• Added Additional Gcode Fields to Pause At Height, contributed by @Cycov
• Make Layer Number the default in Pause At Height, contributed by @discip
• Added more information when rotating a model using the arrows, contributed by @Fabbro03
• Added the "CTRL +" shortcut to open Preferences window, contributed by @Ladnessness
• Added the option to add Machine Action buttons in the Printer Preferences, contributed by @julianCast

Bug fixes:

• Fixed a slicing crash if models were placed in the center of the buildplate.
• Fixed a slicing crash that would happen if Adaptive Layers Maximum Variation had a negative value.
• Fixed a bug where an "object of type SettingFunction is not JSON serializable" error would prevent users from using certain plug-ins.
• Fixed a bug where hole expansion would affect interlocking holes.
• Fixed a bug where fuzzy skin would also apply to interlocking structures.
• Fixed a bug where you could not load gcodes in Cura in some cases
• Fixed a bug where some models would slice slower with Skin-Edge Support Layers
• Fixed a bug where layers were skipped by inserting a support interface on a raft
• Fixed a bug where Relative Extrusion was not calculated correctly when using Retract Continue.
• Fixed a bug that would prevent advanced users from slicing a batch with multiple STLs in a script.
• Fixed a bug where skirt lines would not follow the convex contours of models.
• Fixed a bug where Exclusing Slicing Tolerance was not applied correctly to bottom-layer(s).
• Fixed a bug where small travels were not retracted correctly.
• Fixed a bug where the printjob time showed 0 minutes if adaptive layer height was enabled.
• Fixed a bug with Skin Overlap where the skin would overlap with the roofing.
• Fixed a bug where Support Interface would be generated on top of support.
• Fixed a bug where the Floor Support Interface would not be generated in certain models.
• Fixed a bug where a long material list would disappear from the screen.
• Fixed a bug where support is not generated correctly if Support Pattern is Concentric.
• Fixed a bug where an increased Skin Removal Width would cut off part of the skin area.
• Fixed a bug where Support Towers would be generated but would support nothing.
• Fixed a bug where Small Feature Size would also be applied to inner-wall loops.
• Fixed a bug where adhesion would be printed outside of the buildplate, contributed by @BagelOrb
• Fixed a bug where a primetower brim was printed when it shouldn't, contributed by @BagelOrb
• Fixed a bug where Ooze/Draft shields did not avoid prime tower, contributed by @BagelOrb
• Fixed a bug where not all Mac users could not use USB printing, contributed by Sovenger
• Fixed input value for platform offset when adding a logo, contributed by @drewdoggy
• Fixed a bug where the travel move at the end of a layer unretracts, contributed by @richfelker
• Fixed a bug where WallToolPaths are not simplified, contributed by @Piezoid
• Fixed a bug where iterators were moving out of range, contributed by @Piezoid and @plaintoothpaste
• Fixed a bug where the Maximum Area Deviation value was too small, contributed by @Piezoid
• Fixed a bug where we did not 'pickle' DefinitionContainers correctly, contributed by @Piezoid
• Fixed a bug where an airgap was present in Spiralized Outer Contour, contributed by @richfelker
• Fixed a bug where speeds defined for slower layers would impact speeds accelerations and jerks for the whole print, contributed by @richfelker
• Fixed a bug where materials with longer names in Materials Preferences were harder to read, contributed by @Ghostkeeper