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Hi all, Today we release Ultimaker Cura 5.0! After multiple special beta releases to test our new slicing engine (formerly known as Arachne), the new slicing Engine is finally here. This 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. In the past, sliced files would use a consistent line width, with the exact width depending on the nozzle diameter and the line width settings used. This meant that when slicing a file, if part of the print was two-and-a-half lines thick, Ultimaker Cura would generate two lines and leave a small gap between them. In certain cases (such as with extremely small details) areas of less than one line thick would not be able to print at all. This issue has been completely solved with the latest release. Your printed parts will now have fewer internal gaps which means they’ll not only look better, but they’ll be stronger as well. The following improvements have also been included: 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. Compatible with Apple M1 chips We have fixed a number of visual bugs meaning that users of Apple M1 chips can now enjoy improved compatibility. Improved print profiles for Ultimaker printers New Cura Icon and splash screen Bug fixes: Fixed a bug where Monotonic Ironing breaks Ironing, contributed by BagelOrb Fixed a bug where modifier meshes didn't work in one-at-a-time mode Fixed double scroll bar, contributed by fieldOfView After the 5.0 beta release we want to thank you all for reporting bugs, these issues have been fixed after the beta release: Fixed a bug where multiply was not possible, contributed by fieldOfView Fixed a bug where exporting profiles didn't work 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 printing via USB stops during the print For all improvements, bug fixes and known issues, check the release notes. Or watch this video to learn more about Ultimaker Cura 5.0: Download Ultimaker Cura 5.0 now Let us know what you think of this new engine and show us your results here in the comments below, you can report your bugs on GitHub!

Hi everybody, Today we release the Ultimaker Cura 5.0 beta. After multiple special beta releases to test the Arachne Engine, the new slicing Engine is finally here. This 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. In the past, sliced files would use a consistent line width, with the exact width depending on the nozzle diameter and the line width settings used. This meant that when slicing a file, if part of the print was two-and-a-half lines thick, Ultimaker Cura would generate two lines and leave a small gap between them. In certain cases (such as with extremely small details) areas of less than one line thick would not be able to print at all. This issue has been completely solved with the latest release. Your printed parts will now have fewer internal gaps which means they’ll not only look better, but they’ll be stronger as well. The following improvements have also been included: 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. Support for Apple M1 chips We have fixed a number of visual bugs meaning that users of Apple M1 chips can now enjoy improved compatibility. Improved print profiles for Ultimaker printers New Cura Icon and splash screen Bug fixes: Fixed a bug where Monotonic Ironing breaks Ironing, contributed by BagelOrb Fixed a bug where modifier meshes didn't work in one-at-a-time mode Fixed double scroll bar, contributed by fieldOfView For all improvements, bug fixes and known issues, check the release notes. Or rewatch our launch event to learn more about Ultimaker Cura 5.0 beta: Download the beta now Let us know what you think of this new engine and show us your results here in the comments below, you can report your bugs on GitHub!

Hi everybody, Today we have a patch release for Ultimaker Cura 4.13. Ultimaker Cura 4.13 contained two bugs that needed to be fixed. The major bug was tree support going through the model. With this fix the X/Y distance for support will now also be applied correctly. See below the difference: Another bug we fixed is with surface mode where there were incomplete layers. Many thanks to the community for reporting these issues!! You can download Ultimaker Cura 4.13.1 now! Let us know your feedback here in the comments or on GitHub.

We have a ticket on our backlog for this!

Hi everybody, Ultimaker Cura 4.13 is here! Last release, we focused on quality, this release we want to increase your productivity. We optimized our print profiles for Ultimaker printers. We accomplished this by: - New 0.3mm layer height profile - Improved printing methods of solid parts Material synchronization In the Ultimaker Marketplace you can find more than 200 materials, which are compatible with Ultimaker printers. You can now easily synchronize the material profiles to your printers via the Ultimaker Digital Factory. Here’s how it works: - Subscribe to a profile from the Ultimaker Marketplace - Open or restart Ultimaker Cura - Click “Sync”, and there you have it: the profile is on your printer exactly when it’s needed Use any Ultimaker S-line 3D printer (with firmware 7.0.1) and Ultimaker Digital Factory to get started! Add thumbnails to 3mf files: On Windows you can now see a thumbnail of your model from your 3mf file in Windows file explorer thanks fieldOfView for this contribution! Bug fixes: - Fixed an issue that caused the native CAD import plug-in to fail loading, blocking users from opening CAD files in Ultimaker Cura - Fixed an issue that caused the “pause-at-height” script to stop extruding after resuming on large prints - Fixed a bug with surface mode will not print all layers This release of Ultimaker Cura does not contain as many features for the Ultimaker Community as you may be used to. That said, a lot of amazing things are coming very soon! In the meantime, join the Arachne engine second beta – and be part of Ultimaker Cura’s next revolution! Download the 4.13 now!

Hi everybody, Today we release 4.13 beta! Last release, we focused on quality, this release we want to increase your productivity. We optimized our print profiles for Ultimaker printers. We accomplished this by: - New 0.3mm layer height profile - Improved printing methods of solid parts Material synchronization In the Ultimaker Marketplace you can find more than 200 materials, which are compatible with Ultimaker printers. You can now easily synchronize the material profiles to your printers via the Digital Factory. Here’s how it works: - Subscribe to a profile from the Ultimaker Marketplace - Open or restart Ultimaker Cura - Click “Sync”, and there you have it: the profile is on your printer exactly when it’s needed Use any Ultimaker S-line 3D printer (with firmware 7.0.1) and Ultimaker Digital Factory to get started! Add thumbnails to 3mf files: On Windows you can now see a thumbnail of your model from your 3mf file in Windows file explorer thanks fieldOfView for this contribution! Bug fixes: - Fixed an issue that caused the native CAD import plug-in to fail loading, blocking users from opening CAD files in Ultimaker Cura - Fixed an issue that caused the “pause-at-height” script to stop extruding after resuming on large prints This release of Ultimaker Cura does not contain as many features for the Ultimaker Community as you may be used to. That said, a lot of amazing things are coming very soon! In the meantime, join the Arachne engine second beta – and be part of Ultimaker Cura’s next revolution! Read more about the 4.13 beta in our blog post! Download the 4.13 beta now!

@GAD did you have any trouble with printing your 12h print?

Hi @GAD I have printed your project file and it did not show this behaviour. What firmware are you using?

Hi @GAD thank you for your video and project file. I will check this with the team. Keep you posted.

Hi everyone, Earlier this year, we released the first beta of Ultimaker Cura Arachne engine. Which received an overwhelmingly positive response, thank you for all your feedback! Since the first beta release we've been working on improving the Arachne engine. What is the Arachne Engine? Our new Ultimaker Cura engine allows you to create parts with ground-breaking quality, strength, and speed. This is made possible by fundamentally redefining how the inside of a model is generated – through adaptive line widths and optimized line positioning. New features in Arachne second beta: Back pressure compensation Print quality is improved through dynamically adjusting print head velocity, which slows down or speeds up depending on the pressure of the material through the Bowden tube. Printing order filling gaps Gaps in models are now filled in after placing the outer wall, resulting in less over-extrusion. Print quality enhancements All print quality improvements from Ultimaker Cura 4.12 have been added. Bug fixes: - Fixed a bug where blobs in g-code were generated - Fixed a bug where the Inner Line Width was wider than the end of the model - Fixed a bug where the Seam placement was not on the correct corner Read the full release notes for all the bug fixes and the known issues or read our full blog post. Download the 2nd beta now! Share your feedback, show your results and/or provide us your input for print profiles for your preferred 3D printer with us here in the comments below or on GitHub

Hi all, Today we have a patch release for Ultimaker Cura 4.12! Ultimaker Cura 4.12 contained two major bugs that needed to be fixed immediately. Many thanks to the community for reporting these issues. Here’s what we’ve fixed: Updated Shapely to version 1.8.0 Which, among other things, fixes multiplying objects on MacOS Montery Lighting infill was printed multiple times We have fixed a bug where lighting infill was printed multiple times under certain circumstances. You can download Ultimaker Cura 4.12.1 now! Let us know your feedback here in the comments or on Github.

Hi everyone, Ultimaker Cura 4.12 is here! We have improved our Ultimaker print profiles together with our material engineers, this will increase first-time-right results. Here's how: We’ve tweaked the Monotonic setting and made adjustments throughout print profiles. This removes occasional scarring on models and improves top surface quality by default. We have also looked at horizontal print quality, processing several improvements. This results a reduction of ringing, improving resolution and overall print quality. Lightning infill We have a new infill type called Lightning! This infill setting enables you to print high-quality top layers while using less material and increasing your production speed. It’s an ideal setting for visual models, as reduced material usage will result in a reduction part strength. Lightning infill was a research project inside Ultimaker and is based on this paper. Thanks to rburema and BagelOrb! App switcher: The new app switcher provides a simpler way to navigate and use other Ultimaker applications, including Ultimaker Digital Factory, Ultimaker Marketplace, and Ultimaker 3D Printing Academy. Reporting bugs to Github is now just one click away, and it’s easier to find the application you need. Bug fixes: - Fixed a bug with monotonic ironing that causes fan speed jump to 255 for ironing pass - Fixed an engine crash when using monotonic ordering with zigzag skin pattern - Fixed inconsistent material name in the header and material selection dropdown - Fixed a bug where a random zero was added in the g-code For more information read our blog post, the full release notes or watch our video! Download 4.12 now!! And don’t forget to give us your feedback here in the comments or on Github.

Hi @mikemelanie2020 is it not printing on your printer? Or is it not showing in the preview mode? If that's the case make sure that the helpers are enabled.

Hi @dreadylock do you mean the blue lines around your model? This is the brim, which is for better adhesion of your print. You can edit this in the build plate adhesion type setting. Let me know if that is what you mean!

Hi everyone, Today we release the 4.12 beta and we have improved our print profiles together with our material engineers. We’ve tweaked the Monotonic setting and made adjustments throughout print profiles. This removes occasional scarring on models and improves top surface quality by default and will increase first-time-right results. We have also looked at horizontal print quality, processing several improvements. This results a reduction of ringing, improving resolution and overall print quality. 3D model credit: By Gerardorl is licensed under the Creative Commons – Attribution license Lightning infill: We have a new infill type called Lightning. This infill setting enables you to print high-quality top layers while using less material and increasing your production speed. Lightning infill is based on this paper and was a research project inside Ultimaker. Thanks to rburema and BagelOrb! App switcher: The new app switcher provides a simpler way to navigate and use other Ultimaker applications, including Ultimaker Digital Factory, Ultimaker Marketplace, and Ultimaker 3D Printing Academy. Reporting bugs to Github is now just one click away, and it’s easier to find the application you need. Bug fixes: - Fixed a bug with monotonic ironing that causes fan speed jump to 255 for ironing pass - Fixed an engine crash when using monotonic ordering with zigzag skin pattern - Fixed inconsistent material name in the header and material selection dropdown For more information read the full release notes or our blog post. Download the beta now And don’t forget to give us your feedback here in the comments or on Github. Please note this version of Ultimaker Cura is in the beta phase and still under development. Be sure to use the latest stable release if you’re working on an important project.

Hi @terrypin there is unfortunately no option to recover your settings. When you install 4.11 you will get a message to delete previous versions, make sure you click on no, so your older Cura versions will not be deleted. To make sure to keep your settings you can go to C:\Users\<your username>\AppData\Roaming\cura and then the 4.9.1 folder. Make a copy of this folder and rename it. For next time it is easier to make a back up, go to Extensions - Cura Backups - Manage backups. Let me know if it worked for you!

Hi @cnenzel is this a screenshot in of the preview mode in Cura? Could you post a screenshot of your whole Cura screen?

Hi @jerolee could you share your project file? (file - save project) It makes it easier for me to reproduce your issue.

Hi @techstacy we have a ticket our backlog related to this. See this Github issue: https://github.com/Ultimaker/CuraEngine/issues/1470 There was mentioned to disable optimize wall printing order. I hope that helps a bit for you!

Do you want to let us know about your experience with Ultimaker Cura? Please use the correct platform so your feedback reaches the right people. Have you discovered a bug or do you have a feature request? Please go to our GitHub page. Before posting, please check if the topic already exists via the search bar above the currently open issues. If it does, comment there so we keep everything together. On GitHub we keep track of bugs and feature requests. When you report a bug we mostly need a project file (file - save project) if it is a slicing issue and a log file. Your log file can be found here: Windows: %APPDATA%\cura\<Cura version>\cura.log or usually C:\Users\\<your username>\AppData\Roaming\cura\<Cura version>\cura.log MacOS: $USER/Library/Application Support/cura/<Cura version>/cura.log Ubuntu/Linux: $USER/.local/share/cura/<Cura version>/cura.log If you have an idea for a new feature in Cura please let us know why this feature should be in Cura. Do you have a question about a certain feature or do you have feedback regarding your user experience? Please use our forum, where Ultimakers experts and other users are ready to help! Thank you for using Ultimaker Cura and helping us to make it even better!

Hi everyone, Today we release Ultimaker Cura 4.11. In this release we’ve implemented more than 100 new icons, added monotonic ordering, and improved the digital library. But before we dive into the new features, I want to take a moment to give a special shout-out to you – the Ultimaker community. In the last year our slicing software has seen tremendous, exciting growth, with 87 unique community members contributing a total of 119 new features, bug fixes and third-party additions and updates. A special thanks to Github users fieldOfView and SmartAvionics, who contributed 15% of all contributions. Without our community, the last year’s growth would not have been possible, so thank you very much again! Together, we will continue to make Ultimaker Cura the best slicer possible! Iconic update We’ve implemented more than 100 new icons throughout Ultimaker Cura and aligned them with icons used throughout the Ultimaker platform. These icons are designed specifically for clarity, resulting in a simpler and more informative slicing experience. Also, when scaling the Ultimaker Cura window, the UI will adapt, resulting in less visual clutter. Monotonic ordering The new monotonic top/bottom order setting enables users to print parts with soother, more aligned top surfaces. This is especially useful for parts that need good aesthetics, such as visual prototypes. Or for parts that benefit from smooth surfaces, such as those that contact sensitive components. You can find this feature under the top/bottom print settings of custom mode. This setting is disabled by default. Improved digital library integration Collaborative workflows using the Digital library are now simpler. Every users with a cloud-connected Ultimaker 3D printer can access stored projects. And we have added a “search” function to make finding files easier. Save material profiles to USB Users can now save all third-party material profiles to USB. This feature is for Ultimaker S-line printers only and is especially useful for cloud-connected (or offline) printers. Notifications for beta and plugin releases Users can now set notification preferences to alert them to new Ulitmaker Cura beta and plugin releases. Bug fixes: - Fixed the setting visibility button to make it easier to click - Fixed crash when Cura crashes on exit when languages is not set to English on macOS - Fixed a bug where the infill goes through walls - Fixed the rotation direction of the 90 degrees rotation arrows, contributed by fieldOfView Read here more information in our blogpost, watch our video or read the full release notes here! Download Ultimaker Cura 4.11 now We are really looking forward to hearing from you! Please leave your feedback in the comments below or on Github. From version 4.11 onwards - Ultimaker Cura is only supported on operating systems actively maintained by their software manufacturer or community. This means Windows 7 and MacOS 10.13 will no longer be 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.

Hi @Sifon could you share your project file (file - save project) and log file? You can find your log here: $HOME/Library/Application Support/cura/<Cura version>/cura.log

Hi @Cohbra could you share your project file (file - save project) than I can take a look at it. Thank you in advance.

Hi @DEAWid this is because your model is not watertight. This message pops up when I opened your stl. You could fix the model in a CAD program and that will probably solve your issue.

Hi @arktape you can use the post processing script pause at height 🙂 Go to extensions - post processing - modify g-code - add a script - pause at height