Cura/resources/texts/change_log.txt

[5.5]

* Engine Plugins
- Introduced infrastructure for Engine Plugins; Plugin developers can now hook into and change the actual slice process using a programming language in which they feel comfortable: C++, Python, C#/.NET, Dart, Go, Java, Kotlin, Node, Objective-C, PHP, Ruby
- In this initial version, plugins can hook into the following engine slots: 
-- Modify generated gcode, postprocessing it per layer
-- Generate Infill patterns
-- Modify extrusion paths
-- Listen to a broadcast of all Settings
- Cura plugins can now easily add new Settings and extend existing dropdown Settings
- Users are now warned if a previously saved project file depends on a plugin and that plugin isn't installed in the Cura instance which tries to load it
- To showcase this new infrastructure we introduced a Gradual Flow Engine plugin; This plugin prevents sudden drastic changes in flow transitions. You can find it under your bundled plugins and the new gradual flow settings can be found in the material category when all settings are visible

* Introduced Settings
- Gradual Flow Enabled, Gradual Flow Max Acceleration, Initial Layer Max Flow Acceleration, Gradual Flow discretization step size, are to finetune the Gradual Flow plug-in.
- Top Surface Outer Wall Flow, Top Surface Inner Wall Flow, Top Surface Outer Wall Speed, Top Surface Inner Wall Speed, Top Surface Outer Wall Acceleration, Top Surface Inner Wall Acceleration, Top Surface Outer Wall Jerk, and Top Surface Inner Wall Jerk settings can be used to tune the top surface of your models. 
- Small Top/Bottom Width reduces jerky motions in small top/bottom surfaces, with Small Top/Bottom On Surface you can exclude the setting on the surface
- Enable Fluid Motion, Fluid Motion Shift Distance, Fluid Motions Small Distance, and Fluid Motion Angle are settings for printers with smooth motion planners like Klipper.
- Group Outer Walls  will bundle types of walls in the same layer reducing travels, thanks to the contribution by @Arcari55

* Updates on supported OSses
- Introduced Mac OSX builds for ARM64 (M1 support), next to our existing X64 builds. With major contributions from @TheSin
- Introduced a single Linux build removing the need to have a different modern and regular Linux build. 

* Setting improvements for Ultimaker Printers
- UltiMaker printers with UltiMaker Materials have faster-predicted printing times as a result of a number of changed printing speeds
- UltiMaker configurations with limited intent in the past, like AA 0.8 cores, now have more intents available
- Updated printing temperatures for UltiMaker printers to be more uniform
- Updated Support Interface Settings for UltiMaker printers 
- Introduced a support material tag, so support is automatically printed with support material
- Default has been updated to Balanced to reflect the perfect harmony between these visual, engineering, and draft profiles. 

* Quality of Life Improvements
- Use Tab to navigate between settings in the Per Model Settings window
- Introduced Ctrl-C and Ctrl-V next to the current multiply behavior
- Arrange your models in a grid with the same orientation with Grid Placement
- A message that shows when your Removable Disk is out of space and prevents incomplete gcodes from being saved
- Add Printer and Printer Settings windows are now resizable to fit in more start/end gcode.
- Restored the color picker tool when creating custom materials.
- You can now scroll through long messages, and can easily close them if you finished reading
- Searching for materials and plugins in the Cura Marketplace has been improved
- "This Setting Is Hidden Because" icons were missing in the settings visibility for Windows and Mac
- You can now load multiple files again even if they are mixed STLs and Project Files
- It seemed like models could be multiplied more than 99 times, there is now a limit
- It's now clearer if Cura is syncing materials over the cloud
- It's not possible anymore to send a printjob to an turned off cloud connected UltiMaker printer

* Other Features
- You can now sponsor the Cura team from the Application Switcher, and Help menu
- Infill behavior close to the skin to prevent jerky motions and visible overextrusion
- The About Dialog includes more build information for Cura developers
- Introduced more hardware info like system, release, version, processor, and CPU cores to the logging to improve troubleshooting.
- Updated supporting certify libraries
- Introduced a new Post Processing Script; Limit XY Accel for bed-slinger printers, contributed by @GregValiant
- Introduced the machine name in the gcode headers, contributed by @smartin015
- Extruder settings are cached to speed up slicing, contributed by @sesse

* Bug Fixes that improve Printed Part Quality
- The first support layers were printed incorrectly if adhesion was set to None
- The support was printed before the brim when the origin was at the center of the buildplate
- Some improvements to the Zseam for user-specified or the sharpest corner seam alignment 
- Printers with a high resolution would incorrectly print embossed features
- The flow would unexpectedly increase after a bridge was completed.
- Bridging settings would not be applied to the first skin layer if the infill density was set to 0
- The skirt height could collide with some models and could be printed in support
- A brim would be too small if the extruder was not defined.
- The Initial Buildplate and Printing Temperature would not be applied correctly when printing One-At-A-Time

* Bugs resolved since the Beta Release
- Updated some settings for UltiMaker printers to prevent infill from being exposed, introduce a visual mode for PETG, and prevent stringing for PETG and ABS
- Fixed the upgrade script for UltiMaker materials that would cause configuration errors
- Updated the arrange algorithm to work better with larger models
- Prevented future crashes caused by the new gradual flow plugin with some active printers
- Fixed Linux Legacy crashes for open file dialog due to OS icon style
- The Linux Appimage had an unnessecarily large file size
- The top layers where not showing distinct inner and outer walls. 
- A printjob with a different raft extruder could cause a printjob to be considered too large to print
- A project file with an intent would not be loaded correctly 
- Moved the position of the Target Machine name in the start gcode to predicted time and material use for some printers
- Restored the ColorDialog to prevent an SDK break

* Other Bug Fixes
- You could not load some Marketplace materials with intents on the like BASF Ultrafuse 17-4PH
- For some Linux versions it was not possible to add a 3D printer
- Fixed the installation screen for DMG installation because it still had the old logo.
- The minimum support area was not working correctly for tree support
- Support Horizontal Expansion would be hidden but influenced the warning  for Support Interface
- The shadow in One-At-A-Time printing sequence would not correctly resize with the skirt/brim size
- It was not possible to select the support structure with basic setting visibility.
- Removed the option to change the Brim Distance in the per object setting untilit is fixed
- Fixed a slicing crash if the skirt was larger than the buildplate
- Fixed a crash that would be caused when rotating a model only a little
- If support interface is disabled, you can no longer change those settings
- Ints would be truncated instead of rounded in the engine, contributed by @onitake
- Fixed a non-raw RegEx pattern string removing a depreciation warning contributed by @cgobat

* Printer definitions, profiles and materials: 
- For MacOS users these printers are supported again: Elegoo, Strateo3D, Uni, ZAV
- Added Anycubic Kobra Plus, contributed by @Jordonbc
- Added Creality Ender-5 S1, contributed  @thomaspleasance
- Added Entina Tina 2, contributed by @protosam
- Added Pulse XE E444M, contributed by @randyzwitch
- Updated Primetower settings for Sovol 2
- Updated Kingroon KP3S Pro, contributed by @Tachyonn
- Updated All Goofoo 3D printers to have more nozzles, contributed by @goofoo3d
- Updated Tree Support settings for Elegoo Printers, Contributed by @ThomasRahm
- Updated Voron Trident 250, 300 & 350 Voron to include new nozzles, contributed by @zadi15
- Updated Creality Ender 3 start gcode to prevent bed scratching, Contributed by @PresentMonkey
- Updated nozzle options for Dagoma Pro 430, contributed by @0r31
- Updated start gcode and homing behavior in Creality Ender 3 S1, contributed by @GregValiant.
- Updated faulty disallowed areas for Anycubic Kossel, contributed by @GregValiant

* Community translations:
- Updated Brazilian translations, contributed by @Patola

[5.4]

* Introduced the new Tree Support contributed by @ThomasRahm
Try it for yourself <a href="https://www.thingiverse.com/thing:6069926?utm_source=changelog&utm_medium=cura&utm_campaign=54_beta">with this dragon pencil cup</a>.

- Improved slicing time for Tree Support
- Introduced 10 new settings and updated 2 so anyone can tune the behavior
- Updated options for Tree Support Rest Preference to be more correct
- Fixed a bug where Tree Support would generate unsupported islands
- Fixed a bug where slicing would fail if Preference was set to On Any Flat Surface
- Fixed a bug where branches were not generated when Support Interface was enabled.
- Fixed a bug where the Support Overhang Angle caused a crash with Tree Support
- Fixed a bug where the Support Interface was not correctly generated with Tree Support

* Changed the order in which the brim is printed so it's easier to remove
Introduced the Smart Brim setting that changes the order in which the brim lines are printed making them easier to remove. Try it for yourself <a href="https://www.thingiverse.com/thing:6080908?utm_source=changelog&utm_medium=cura&utm_campaign=54_beta">with this Cura Cookie Cutter</a>.

* New features and improvements:
- Updated the UltiMaker logo to reflect the new company logo
- Added support for the updated mainboard revisions of UltiMaker S3, S5, and S7
- Introduced Hole Horizontal Expansion Max Diameter so only the expansion of smaller holes can be tuned while leaving larger holes untouched.
- Introduced Skirt Height setting to make a skirt easier to remove
- Improved the minimum layer time for printers with multiple extruders.
- Improved accuracy of when the M104 Hotend Temperature command is added
- Improved printing order of the prime tower to include a dual brim, primed every layer, and primed before and after the extruder switch.
- Improved behavior for opening and closing categories when adding a new printer
- Removed the settings related to Wire Printing since it was broken and barely used.
- Upgraded PyQt to version 6.4.2 which improves responsiveness in the UI

* Bug Fixes
- Fixed a bug where the brim line would not be printed in the same orientation
- Fixed a bug where models dropped to the buildplate when they were supposed to be floating
- Fixed a bug where models would overlap if multiple models were loaded at the same time
- Fixed a bug where an error would be shown too often in One At A Time print sequence
- Fixed a bug where the message for a new Beta version available would show up during the Beta.
- Fixed a bug where ESun PLA+ would display unsupported.
- Fixed a bug where the printjob name was hard to read in darkmode
- Fixed a bug where the Minimum Layer Time was incorrectly interpolated
- Fixed a bug where Cura would crash on star-up for some Linux systems because of missing SimpleButton, contributed by @fieldOfView
- Fixed a bug where the Post Processing Plugin would create extra folders, contributed by @fieldOfView
- Fixed AppImage Icon for Linux systems, contributed by @leoheck
- Fixed a bug where the buildplate temperature in the USB printing monitor was not rounded, contributed by @asteroids1975
- Fixed a bug where retracting for Filament Change was not performed correctly because of an extra /n in the gcode. Contributed by @JuanManuelCuello
- Fixed a bug where the material estimation would not show currencies correctly. Contributed by @Diegovd

* Bugs resolved since the Beta Release
- Fixed a bug where undesirable micro-segments would introduce jagged paths on curved surfaces.
- Fixed a bug where it was not possible to use custom support and brim meshes 
- Fixed a bug Cura would not start when upgrading from a Cura 5.4 Nightly
- Fixed a bug where Connect Top/Bottom Polygons would cause a slicing crash
- Fixed a bug where generic materials were missing for some printers
- Fixed a bug where Support Horizontal Expansion would be incorrectly applied to tree supports
- Fixed a bug where nozzles were missing from the Elegoo Neptune 3 Plus. Contributed by @GregValiant

* Printer definitions, profiles, and materials:
- Introduced UltiMaker PET CF with Annealing and Engineering intents
- Updated Infill- and Skin Overlap settings for UltiMaker printers
- Enabled a modest Support Brim by default for UltiMaker printers
- Updated Support Interface speeds for PVA for UltiMaker printers
- Added Gutenberg G-Zero, contributed by @ChipCE
- Added Hellbot Magna SE 300, and Magna SE Pro, contributed by @DevelopmentHellbot
- Added Kingroon KP3S Pro, contributed by @willuhmjs
- Added LNL3D D3, D3 Vulcan, D5 and D6, contributed by @LNL3D
- Added Longer LK4 X, contributed by @BradleyFord
- Added Mixware Hyper K, Hyper S, Vulcan, and Wand, contributed by @Mixwarebot
- Added Snapmaker 2 A150, A250 an A350 dual extruder printers, contributed by @highpowerxh
- Added Sovol SV04, contributed by @Joyce-lujunxu
- Added Sovol SV06 plus, and updated Sovol SV06, contributed by @Ashok-Varma and @eropple
- Added WeeFun Tina2, and WeeFun Tina2, contributed by @syntax1269
- Updated Creality 3 S1, Creality 3 S1 Plus, and Creality 3 S1 Pro, contributed by @sparkym3
- Updated Cremaker profile to remove material temperature boost, contributed by @hyu7000

* Community translations:
- Updated Brazilian translations, contributed by @Patola

* Known critical issues:
- Support Brim is missing if the Buildplate Adhesion is set to None. <a href="https://github.com/Ultimaker/Cura/issues/14983">We are tracking reports here</a>. 
- Hide seam is actually not hidden and can give random results, for now changing the Seam Corner Preference to None will give better results. <a href="https://github.com/Ultimaker/Cura/issues/15290">We are tracking reports here</a>.  
- Combing Not In Skin can result in unexpected stringing. <a href="https://github.com/Ultimaker/Cura/issues/14511">We are tracking reports here</a>. 
- Multiple external monitors on Windows (especially if from the same brand) <a href="https://support.ultimaker.com/hc/en-us/articles/6103674944156">might be a problem under some circumstances</a>. 
- Does Cura (not) work on your OS (version)? See <a href="https://support.ultimaker.com/hc/en-us/articles/360011889579">this article</a> for clarification.



[5.3.1]

Restored and updated translations for 11 languages

* Bug fixes:
- Fixed a bug where the machine definitions could not be updated
- Fixed a bug where part of the model would not have fuzzy skin
- Fixed a bug where a project files that contain an intent profile would not load correctly
- Fixed a bug where Pause At Height was not working correctly for Griffin (UltiMaker printers)
- Fixed a bug where slicing was blocked if initial printing temperature was higher than the printing temperature
- Fixed a bug where Gcode would display NOMESH instead of NONMESH, contributed by ckvsoft
- Fixed a bug where users were unable to slice with certain materials

[5.3]
<i>This release does not yet contain the new tree support implementation by ThomasRahm.<a href="https://github.com/Ultimaker/Cura/releases/tag/5.3.0-alpha%2Bxmas"> You can download a special Cura version for that here</a>.</i> 

* 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 <a href="https://www.thingiverse.com/thing:5842529?utm_source=changelog&utm_medium=cura&utm_campaign=53_beta">with this test model</a>.

* 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 have 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 they 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 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 

* Bugs resolved in the Beta Release
- Fixed a bug where no support would be generated for narrow ridges
- Fixed a bug where Hole Horizontal Expansion would remove part of the model
- Fixed a bug where Support Horizontal Expansion was broken
- Fixed a bug where Enable Conical Support would prevent support from being generated
- Fixed a bug where the brim would be printed from inside out 
- Fixed a bug where the brim width would not be respected in multi-extrusion
- Fixed a bug where missing Geetech A10, Geetech Mizar S, and Geetech A30 definitions would cause a corrupt error message  
- Fixed a bug where you could not resize the Recommended settings window
- Fixed a bug where wiping in the walls (as opposed to infill) wasn't working

* Printer definitions, profiles and materials:
- Support Towers are working again and enabled by default for all printers.
- Updated Support Horizontal Expansion, Support Join Distance, and Minimum Support Area Settings for UltiMaker printers to improve support reliability. 
- Updated intent and quality files for UltiMaker printers to have more consistent file names. 
- Updated default Support Interface Pattern to ZigZag for UltiMaker printers
- Updated Maximum Combing Distance for UltiMaker printers
- Updated UltiMaker ABS Silver Metallic to the correct UltiMaker ABS Silver
- Updated AnkerMake M5 definitions, contributed by just-trey
- Updated Anycubic i3 Mega S/Pro profile, contributed by NilsRo
- Updated Creality Ender CR10 start GCode, contributed by InstantMuffin
- Updated Creality Sermoon V1 profiles to include hotend specifics, contributed by Iggomez
- Updated Geetech A10M, A10, A20, A20M, A20T, A30M, MizarS, contributed by whoseyoung
- Updated PPGF30 temperature from 235 to 240, introduced by heed818
- Updated Rigid3D machine definitions, contributed by mehmetsutas
- Updated Sovol SV01, SV02, and SV03, contributed by eropple
- Updated Sovol's SV01 and SV02 bed dimensions, contributed by eropple
- Updated VzBot definition, contributed by ckvsoft
- Added AnkerMake M5, contributed by just-trey
- Added Anycubic Kobra Go, contributed by Razzeee
- Added Artillery Hornet, contributed by wilds
- Added Biqu Hurakan, contributed by looxonline
- Added Blocks ONE MKII, Blocks One, Blocks Pro S100, Blocks Pro S30, Blocks R21, Blocks RD50, and Blocks Zero, contributed by jgrilo-blocks
- Added Creality CR-10 Smart, contributed by eropple
- Added Creality Ender-3 S1 Plus, and Ender-3 S1 Pro, contributed by izilzty 
- Added Creality Sermoon V1, and Sermoon V1 Pro, contributed by Iggomez
- Added Dagoma Sigma, and updated Dagome Pro430, contributed by 0r31
- Added Elegoo Neptune 1, Neptune 2s, Neptune 3, Neptune 3 Max, Neptune 3 Plus, Neptune 3 Pro, and Neptune X, contributed by NARUTOfzr
- Added FablabBcn PastePrinter, contributed by EDUARDOCHAMORRO
- Added Flsun V400, contributed by dengdaitianhei
- Added Fusion3 F410, contributed by 64bittuning
- Added Geetech A10Pro, A30Pro, A30T, E180, GiantArmD200, I3ProB, i3ProC, I3PrW, MeCreator, MeCreator2, MeDucer, Mizar, MizarM, MizarMax, MizarMax, MizarPro, and Thunder, contributed by whoseyoung
- Added Klema 180, Klema 250, Klema 250 Pro, Klema 250 Twin, and Klema 500, contributed by polyntsev
- Added Modix V3 BIG-120X, V3 BIG-120Z, V3 BIG-180X, V3 BIG-40, V3 BIG-60, V3 BIG-Meter, V4 BIG 60, V4 120x, V4 120z, V4 180x, and V4 BIG-Meter contributed by Modix3D
- Added SnakeOil Standard 180, and SnakeOil Standard 250, contributed by ChipCE
- Added Sovol SV01PRO, SV05, and SV06, contributed by eropple
- Added UMO+ DXU, contributed by ansonl
- Added Voron Trident 250, Trident 300, and Trident 350, contributed by RagingRoosevelt 

* Community translations:
- Updated French translations, contributed by xommit
- Updated a typo in Japanese translations, contributed by tamorikawa

* Known critical issues:
- Translations are not complete yet, we hope to resolve this before 5.4. 
- Part of models are not being Fuzzyfied when fuzzy skin is enable yet, we hope to resolve this before 5.4.
- The experimental setting Wire printing seems to be broken
- Reports have been coming in that Cura is running slow on Windows 11 <a href="https://github.com/Ultimaker/Cura/issues/13820"> We are collecting cases here</a>. 
- Multiple external monitors on Windows (especially if from the same brand) <a href="https://support.ultimaker.com/hc/en-us/articles/6103674944156">might be a problem under some circumstances</a>. 
- Does Cura (not) work on your OS (version)? See <a href="https://support.ultimaker.com/hc/en-us/articles/360011889579">this article</a> for clarification.

[5.2.2]

* Introducing the UltiMaker S7
- Included support for the new UltiMaker S7

* Bug fixes:
- Allow UltiMaker S7 printers to receive Material Profiles

* Printer definitions, profiles and materials:
- Improved Initial Layer settings for UltiMaker S7, S5, and S3 printers
- Disabled Support Towers for UltiMaker S7, S5, and S3 printers
- Cleaned up material profiles, by removing duplicate setting segments, and unused elements 
- Updated preferred quality type for all UltiMaker 3D printers


[5.2.1]

* Bug fixes:
- Restored Italian translations (was French)
- Restored simplified Chinese translations (was Czech)

[5.2]

* Abstract Cloud Printer Type
Online cloud printers are now grouped by type. You can slice with the ('abstract') printer type, and afterwards choose a specific printer to print with.

* Support For 'Guest'-Type Accounts (In Digital Factory)
Users with the ‘Guest’ role can prepare print jobs in Ultimaker Cura and send them to the printers via Digital Factory. These print jobs will not start until they are approved by a user with an 'Member' or 'Admin' role.

* More Control Over Initial Layer Flow
Three new settings: 'Initial Layer Outer Wall Flow', 'Initial Layer Inner Wall Flow', 'Initial Layer Bottom Flow', to better counteract the 'elephants foot' phenomenon.

* Other new features and improvements:
- Auto-remove holes from not completely solid models in vase-mode
- Add setting for 'tree support max diameter'
- Add option to drop-down models to the build-plate individually, contributed to Piezoid
- Added a preference to make the tray icon optional, contributed by fieldOfView
- (Community Developer Update: Proper workflow for 'installing from source' on Windows! <a href="https://github.com/Ultimaker/Cura/wiki/Running-Cura-from-Source">See our wiki.</a>)

* Bug fixes:
- Fixed a crash to do with the serialization of functions, contributed by Piezoid
- Fixed a crash that could occur when a user has non-latin characters in their Windows username
- Another 'Tree Support Starts in Air' fix
- Restore tooltips (if available) for Intents in Recommended print settings
- Fix startup on 'Zorin OS' (a Linux flavor), contributed by Tim453
- On Windows, (admin) users should be able to uninstall via 'Programs and Features' again
- Correct version number in Windows uninstaller
- Uninstalling didn't remove all files in Windows
- (Windows) An uninstall could only be done by the original user that installed
- Don't ignore bottom pattern when spiralizing
- Don't 'Union All' for 'Merged Meshes Overlap'
- Seam placement was not in the correct corner in some cases
- Cutting meshes with 'surface' set to 'both' cut through the mesh
- Brim lines where ordered the wrong way in some cases
- Random seam is now more random
- Correctly apply combing when spiralizing, contributed by smartavionics
- Don't spam the user with spurious 'Cura Notification's (Windows only)
- Don't spam the logs with duplicated deprecated warnings, contributed by Patschke
- Properly update the infill percentage in the top bar after an intent profile switch
- In certain rare situations, layers would be printed multiple times when monotonic fill was on
- Put tree support infill density at 0% by default
- Machine settings: Also save values when closing the window, not just when focus' changed
- Reduce clickable area of settings checkboxes, to prevent mis-clicks
- Fixed a crash when an unnamed tool would be accessed (possibly related to plugin use)
- Fix an issue where a plugin would crash because of a missing dependency
- Many helpful code refactors, contributed by digitalfrost
- Fix for to-mouse zoom on screens with scaling factor, contributed by seaniepie
- Models could not be multiplied in one-at-a-time mode

* Printer definitions, profiles and materials:
- Added Creality Ender 3 S1 profile, contributed by Sebazzz
- Added Anycubic Kobra (Max), contributed by ANYCUBIC-3D
- Added HCTECH printers, contributed by 3d-hctech
- Added da Vinci Pro EVO, contributed by heed818
- Fix FLSUN QQ-S platform orientation, contributed by RVillani
- Fix Kingroon printers from going outside the build-volume in the end-gcode, contributed by odaki
- Added Geetech Mizar_S, contributed by Geeetech3D
- Added Tank-M printer, contributed by KOONOVO3DPrinter
- Update Renkforce RF100XL definition, contributed by imakecodes
- Added VzBot profiles, contributed by ckvsoft
- Added (additional) mingda printers, contributed by jianshu-du
- Added Naxe machines, contributed by Naxecorp
- Added T-Rex 2+, T-Rex 3, contributed by jim-edwards
- Update FLsun SR, contributed xPakrikx
- Update Anycubic mega zero, contributed by NOVAXIM
- Added some Renkforce machines, contributed by goofoo3d

* Community translations:
- Updated the Brazilian Portuguese translation, contributed by Patola
- Updated the Czech translation, contributed by sustmi

* Known critical issues:
- While some small fixes have been made already, the placement of the seam is still more scattered than before 5.0. (Will try to fix in stable.)
- <a href="https://support.ultimaker.com/hc/en-us/articles/6103470096028">Support is sometimes missing in detailed parts</a>, where previous releases supported them properly (still). (Will probably not be fixed in stable. This is currently slated for 5.3)
- Multiple external monitors on Windows (especially if from the same brand) <a href="https://support.ultimaker.com/hc/en-us/articles/6103674944156">might be a problem under some circumstances</a>. (Will probably not be fixed in stable.)

* Does Cura (not) work on your OS (version)? See <a href="https://support.ultimaker.com/hc/en-us/articles/360011889579">this article</a> for clarification.

[5.1.1]
* New features:
- Added support for the Ultimaker S3 and Ultimaker S5 updated mainbord


<i>MacOS 10.15 is no longer supported. Technically this means Ultimaker will stop testing and developing for such operating systems. However, even though it is no longer supported, there is still a high likelihood the application keeps functioning.</i>

[5.1]
<i>For an overview of the new features in Cura 5.1, please watch <a href="https://youtu.be/7jetjsHLIvk">our video</a>.</i>

* Improved toolpath simplification algorithm
The algorithm that reduces the resolution of the print has been rewritten, providing a more constant resolution to allow for greater precision without causing buffer underruns.

* Added option to alternate wall direction
A new setting causes the direction of printing walls to alternate between layers and adjacent walls, which reduces warping in the print.

* Adjusted combing boundaries to reduce scarring
Travel moves through the inside of the models are adjusted so that they should keep more distance from the model where possible, yet allowing travels through narrow parts without retractions.

* Reduced acceleration and jerk commands for travel moves
We added the option to disable acceleration and jerk commands for travel moves. If disabled, they will take on the acceleration of the printed part of its destination. This greatly reduces file size and buffer underruns.

* Project files know which packages they require
Newly created project files will now store which packages they require from the Ultimaker Marketplace. If a project needs a material from there, the user will be prompted to download it.

* Other new features and improvements:
- The interface to select the printing profile in Recommended Mode has been redesigned.
- Implemented multi-threaded slicing for MacOS, to bring it in line with other operating systems, contributed by Piezoid.
- Cura now links toolpaths to project files in the Digital Factory.
- Improved performance of loading STL files on Linux.
- Packages from the Marketplace can now contain intent profiles.
- The application now makes heavy use of Conan to make it easier and faster to build releases of Cura.
- Start and end g-code can now refer to the currently active profile with replacement keys.
- To provide proper compatibility with both older and newer Linux distribution, this release contains two Linux builds.

* Bug fixes:
- Fix resetting configuration if it gets corrupt.
- Monotonic ordering now works again for top surfaces.
- Fix a bug where Remove Raft Inside Corners didn't always remove all corners.
- Fix the position of the toolbar if the toolbar is too tall to fit.
- Intents in the Recommended Mode now show a description again.
- Remove Inside Corners and Raft Base Wall Count can now be changed per extruder, though they will affect the entire print.
- Fix opening STL files with special characters in their header.
- Fix crash at start-up on newer Linux distributions.
- Fix priming when printing a raft with a different extruder for some of its layers.
- Fix a case where the inner wall ends up protruding through the outside of the model.
- Improve some details on dark mode colouring.
- Fix an error sometimes occurring when uninstalling plug-ins.
- Fix a rendering issue with pop-up dialogues on MacOS.
- Fix Discard or Keep Changes dialog showing an outdated setting value.
- Horizontal Scaling Shrinkage Compensation no longer adjusts the size of the build volume, allowing the full size of the build plate to be used.
- Fixed overextrusion when using gradual infill with thin strips of infill.
- Fix opening STL files with special characters in their file header.
- Fix slicing failure when using Randomize Infill Start in some cases.
- Restore reminder to sync materials with your printer when using cloud printers with custom materials.
- The tool bar should no longer show up in the monitor stage.
- Exporting materials should now retain settings unknown to Cura as well.

* Printer definitions, profiles and materials:
- Improved profiles for PVA and support for Ultimaker printers.
- Adjust retraction speed and distance for Voron, contributed by Haxk20 and Cbc02009
- Heat up extruder and build plate at the same time for Ender 3 Pro, contributed by XDazld.
- Add new Tough PLA colours.
- Add DD0.4 print cores for Ultimaker printers.
- Add MakerGear M2 printer, contributed by Wanders78746.
- Add Trimarker Nebula Plus printer, contributed by MatiGabaglio.
- Various small profile improvements.

* Community translations:
- Updated the Brazilian Portuguese translation, contributed by Patola.
- Updated the Czech translation, contributed by sustmi.

* Known critical issues:
- The placement of the seam has gotten more scattered than in previous releases.
- Support is sometimes missing in detailed parts, where previous releases supported them properly.

[5.0]
<i><a href="https://youtu.be/kRj7pR4OkQA">Watch the launch event</a> to learn more about Ultimaker Cura 5.0.</i>

* New slicing engine
Following special beta releases to test the Arachne engine, we are pleased to announce our new slicing engine is here in Ultimaker Cura! This all-new engine uses variable line widths when preparing files for printing, meaning you can now print thin and intricate parts more accurately and with greater strength. 

* Renewed the Ultimaker Cura Marketplace
We have streamlined the workflow for accessing the Ultimaker Marketplace inside of Ultimaker Cura. The UI has been improved and it’s now easier and faster to find and install plugins and material profiles.

* Improved print profiles for Ultimaker printers
The new slicing engine in Ultimaker Cura 5.0 has helped us to improve our print profiles. This means that users of Ultimaker printers can achieve speed increases of up to 20%.

* Upgrade from Qt5 to Qt6
Ultimaker Cura 5.0 is now compatible with Apple M1.

* Other new features and improvements:
- New Cura icon
- New Cura splash screen
- Updated the digital build plates for Ultimaker printers
- Introduce Minimum Wall Line Width, contributed by BagelOrb
- Settings for metal printing implemented
- Shrinkage compensation is now available for PLA, tPLA and PETG
- Improved default Line Widths for Spiralize
- Decrease resolution to remove some buffer underruns
- Incomplete languages are now shown in the language drop-down menu
- Improved the visibility of the checkboxes

* Bug fixes:
- Added the Scale Fan Speed From 0 to 1 setting for printers that interpreted fan speed as percentages
- Fixed a bug with extra travel moves increased the printing time, contributed by BagelOrb
- Fixed a bug where Monotonic Ironing breaks Ironing, contributed by BagelOrb
- Changed the priority of CuraEngine
- Fixed a bug where increasing Filter distances creates extremely wide lines, contributed by BagelOrb
- Fixed double scroll bar, contributed by fieldOfView
- Fixed a bug where maximum resolution/deviation was not applied to surface mode, contributed by BagelOrb
- Fixed a bug where the seam placement was uneven
- Fixed a bug where Top Surface Skin Layers didn't work
- Fixed a bug where Speed in the flow setting were not respected
- Fixed a bug with unnecessary retracted travel moves
- Fixed a bug where the Ironing Inset didn't work
- Fixed a bug where Support Layers were missing
- Fixed a crash if Randomize Infill Start was used
- Fixed a bug where Combing was in the wrong part with dual extrusion
- Fixed a crash with Bridging and Top Surface Skin Layers
- Fixed a bug where modifier meshes didn't work in one-at-a-time mode
- Fixed a bug where Tree Support Branches where not being generated
- Fixed a bug where less support was generated
- Changed the possibility for 100% Infill Bottom Layer for Spiralize, contributed by BagelOrb
- Fixed disallowed areas for Brim gap, contributed by BagelOrb

* Bug fixes after the 5.0 beta:
- Fixed a bug where Retraction Distance couldn't have small values
- Fixed a bug where there were duplicated themes
- Fixed a bug where there were scrollbars showing on tooltips
- Fixed a bug where drag and drop was not working on the first run of Cura
- Fixed a bug where Infill Percentages are not lined up correctly in Recommended mode
- Fixed a bug where it wasn't clear if the textfield was active
- Fixed a bug where highlighted text in text field is unreadable
- Fixed missing icons, contributed by fieldOfView
- Fixed a bug where scrolling through long material list was not possible
- Fixed a bug where multiply was not possible, contributed by fieldOfView
- Fixed a bug where micro segments are causing blobs
- Fixed a bug where there was over extrusion when printing with gradual infill
- Fixed a bug where error values could slice 
- Fixed a bug where the CPU was high when Cura was idle
- Fixed a bug where an existing gcode file was overwritten when you select no to overwrite
- Fixed a crash when selecting extruders
- Fixed a bug where exporting profiles didn't work
- Fixed a slicing error with certain infill patterns
- Fixed a bug where printing via USB stops during the print
- Fixed a bug where the toolgrips where missing, contributed by fieldOfView
- Fixed a bug where the print values didn't save when closing the page, contributed by fieldOfView
- Fixed the width of a Menu to fit the widest MenuItem, contributed by fieldOfView
- Fixed a bug where Use Single Instance of Cura in Preferences crashes upon restart
- Fixed a bug where travels would go through the model with printing PVA
- Fixed a bug where Concentric ironing was affecting the print quality		
- Fixed a bug where there were missing infill layers
- Fixed AppRun permissions, contributed by probonopd

* Printer definitions, profiles and materials:
- Added Atom 3 and Atom 3 Lite printer definitions, contributed by Daniel-Kurth
- Added Layer One Black PLA, Dark Grey PLA and White PLA, contributed by Daniel-Kurth 
- Added FLSUN Q5 printer definition, contributed by kreuzhofer
- Added Creatlity CR100 printer definition, contributed by bodyboarder2528
- Added Mixware Hyper-S printer definition, contributed by mixware011
- Added Creality Sermoon D1 printer definition, contributed by felixstif
- Added Volumic SH65, Stream30Pro MK3 and Stream30Ultra SC2 printer definitions, contributed by VOLUMIC
- Updated Eryone Thinker and ER20 profiles, contributed by Eryone
- Updated Atom 2 profile, contributed by lin-ycv
- Added Hellbot Hidra and Magna series printer definitions, contributed by DevelopmentHellbot
- Updated Snapmaker 2 End-Gcode, contributed by Rolzad73
- Updated the Tinyboy Fabricator printer definitions, contributed by reibuehl
- Updated the Creality Ender 5 printer profile, contributed by Rakhmanov
														  
* Community translations:
- Updated the Brazilian Portuguese translation, contributed by Patola
- Updated the Czech translation, contributed by sustmi
- Updated some of the Simplified Chinese translation, contributed by iBral

<i>From version 5.0 onwards - Ultimaker Cura is only supported on operating systems actively maintained by their software manufacturer or community. This means Windows 7 and MacOS 10.14 will no longer be supported. 
Ubuntu 18.04 is also no longer supported because of the update to Qt6.</i>

[4.13.1]
The release notes of versions &lt;= 4.13 can be found in our <a href="https://github.com/Ultimaker/Cura/releases?page=3">releases GitHub page</a>.