Lychee Slicer Version 7.3 & 7.3.1

Release date: 2025-03-24 (updated 2025-03-26 - V.7.3.1)

You love new features, but you also wanted us to refine what’s already there. Thanks to your feedback, we’re excited to bring you Lychee Slicer 7.3.1, a new version focused on fixing annoying bugs, solving pain points, and enhancing your overall slicing and printing experience.

[HOTFIX 7.3.1] - Bug Fixes: We fixed a critical bug that could corrupt scenes during certain geometry operations.

Fixed ⚙️

Major Fixes

• CTRL + Shift + E Shortcut – The "Export Selected Object" shortcut now works as expected.
• Saving Empty Scenes – Previously, attempting to save an empty scene was impossible. This has been fixed.
• Transparent Navigation Tabs – The Resin and Filament menus no longer appear transparent when returning from Preferences.
• External Drive Saving – On Windows, scene files (.lys) can now be saved at the root of a drive.
• Shift + Drag Select for Supports – Selecting supports with SHIFT + drag now works consistently without deselecting other supports.
• Reload Last Scene Dialog Checkbox – The “Do not show again” checkbox now properly prevents the dialog from reappearing.
• Creality Halot One Screen Ratio – Corrected the height/width ratio in sliced files for the Creality Halot One, causing UVTools to alert on an incorrect ratio.
• Hole Editing & Wi-Fi Printer Reset – Gizmo no longer resets when using advanced features (planar cut, hole advanced mode) with a Wi-Fi printer connected.
• Files Not Opening in Recent Versions – Fixed a bug causing some files from older versions to take a long time to open on recent versions, which worked fine in 5.2.

Other Fixes

• Creality Halot Mage S slicing issue – Objects no longer appear "zoomed in" and cropped from the slicing frame.
• Blockers disappearing when modifying holes – Moving holes in a model with hollow blockers no longer causes blockers to vanish.
• Island detector navigation – Deleting an island now correctly jumps to the next island.
• Proximity detector fix –Some supports inside the model are now flagged as invalid. Further improvements are ongoing.
• Large geometry slicing – Delta printers can now slice large geometries without issues.
• Export crash fix – Invisible objects can no longer be exported to STL/OBJ, preventing crashes.
• Printer upgrade cancellation – The cancel button now functions correctly in the printer upgrade prompt/modal.
• Collision support highlight – Supports touching the object are now properly highlighted in red in real time.