Download PrusaSlicer 2.7.2

Prusa Research has released version 2.7.2 of PrusaSlicer. Simply put, this program ensures that a 3D design comes out of a 3D printer as best as possible. PrusaSlicer is open source and available for Windows, Linux and macOS. It is primarily developed for Prusa's own printers, but includes a large number of profiles for printers from other brands. The following changes and improvements have been made in this release:

Improved Multi-Material Painting

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. We also reimplemented a significant part of multi-material painting from scratch, which, together with the changes above, should resolve all issues with spilled layers for multi-material segmentation.

Color Change (M600) Community Driven Improvement

Previously, PrusaSlicer placed the color change (M600) right after the previous layer was finished. The default implementation of color change in pretty much all firmwares returns the nozzle to the exact same position as before the color change started. As a result of this behavior, a small blob of filament with the newly loaded color would get stuck to the print.

Our community, especially @Nohus, came up with a solution of placing the color change after moving to the next layer and position, which proved to be much easier and more universal solution than changing the M600 implementation on the firmware side. Thank you, Nohus, for your implementation and all of you who participated in testing his change.

Ramping Travel Moves: Smoother and More Efficient

We've replaced helical layer changes introduced in 2.7.1 with a more refined ramping profile. While the helical layer changes helped to reduce stringing, they sometimes caused color blobs and artifacts. With the new and refined ramping profile stringing is still mitigated without the disadvantages of the helical movements.

SLA Overrides

For SLA printing, we've introduced Material Overrides. This new feature, mirroring the flexibility of FDM slicing, allows to override selected configuration options from Print or Printer Settings in Material Settings. There is a new parameter page in Material Settings, which allows to check the parameters which would be overridden and to redefine their value.

A Farewell to Pearl

PrusaSlicer's origin is based on the Slic3r project, which was originally written in Pearl scripting language. Over the years, we've rewritten nearly all of the code. First the slicing core, then the user interface. We have now rewritten all remaining unit tests still depending on Pearl into C++. Goodbye, Pearl. You won't be missed.