This itself solved many of the spilled layer issues with multi-material segmentation and also one crash during thin-wall generation ( #10632). In this release, we have generalized these mechanisms to be used anywhere in PrusaSlicer. These mechanisms were originally implemented only for Arachne, and they were heavily tight with Arachne's data structures. In 2.5.0, we implemented several mechanisms to detect a non-valid Voronoi diagram, and by manipulating the input, we could ensure that the Voronoi diagram would be valid. Unfortunately, it rarely produces a non-valid Voronoi diagram for some input polygons (the graph is not planar, missing vertices, etc.), which could cause a crash of PrusaSlicer, artifacts on external perimeters with Arachne or spilled layers with multi-material segmentation. We use the Voronoi diagram implementation from the Boost library because it is both fast and numerically stable. In PrusaSlicer, we use Voronoi diagrams as part of several features such as Arachne, multi-material segmentation, gap-fill, and thin-walls. The alpha will ask whether it should import a configuration from previously run PrusaSlicer versions on the first start. To let you enjoy the alpha without worries, the alpha builds save their profiles into PrusaSlicer-alpha directory, so you may use the alpha side by side with the current release without ruining your production configuration. This release introduces improvements of multi-material segmentation algorithm, improved M600 G-code handling, SLA overrides and many more improvements and bugfixes. This is the first public alpha release of PrusaSlicer 2.7.2 (alpha1 was not public). Updated BE dictionary ( #12208, thanks to Updated FI dictionary ( #12128, thanks to Updated RU dictionary ( #12220, thanks to Summary.( #6533, supermerill#4079, fixed by PR #12127, thanks to Updated CS, DE, ES, FR, IT, PL dictionaries. When Print / Filament / Printer profiles contained different values for the same key (which should normally not happen, providing the profiles are correct), the misplaced keys could have been used instead of the correct ones.Instead, regular travel speed should have been used for the z travel ( #12258, #12293). When z travel speed was set to zero, it was incorrectly exported into the G-code, effectively stopping the print.Variable layer height limits were not applied correctly when using multi-extruder printer with different values of min and max layer height ( #12248).With option "Retract on layer change" disabled, there was a retraction missing before the first travel on each layer ( #12219).Travels with standard lifts (non-ramping) were incorrectly generated ( #12257).The beta will ask whether it should import a configuration from previously run PrusaSlicer versions on the first start. To let you enjoy the beta without worries, the beta builds save their profiles into PrusaSlicer-beta directory, so you may use the beta side by side with the current release without ruining your production configuration. Please, read the change log of 2.7.2-alpha2 for the complete list of bugfixes and improvements over 2.7.1. You can then immediately use Studio One Free, no Internet connection or user account is required, no product key is involved, and Studio One Free will not time out.This is the first beta release of PrusaSlicer 2.7.2, which fixes bugs found in the previous alpha. To use Studio One Free, download the Studio One installer by clicking on the link for your operating system below, install, and then click on Run the Free Version when the activation dialog comes up. Intended for beginners who don’t yet need the advanced features in Studio One™ Artist, Producer, and Professional, Studio One Free provides all of the recording and editing features needed for basic music production-and as its name implies, it’s free.
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