Releases: mjonuschat/PrusaSlicer
PrusaSlicer 2.9.5-rc1 (BOSS)
[2.9.5-rc1] - 2026-05-12
PrusaSlicer (BOSS) Nightly Build
Please note that nightly builds of PrusaSlicer (BOSS) are the latest versions
automatically compiled after every new commit to the development branch. This
means that each build incorporates the most recent changes and improvements.
While these builds provide a glimpse into the ongoing development of
PrusaSlicer (BOSS), it's important to remember that they may be works in
progress and may contain bugs or unstable features.
[unreleased]
🚀 Features
- (surface) Add structured noise for fuzzy skin (5c8a4f0)
- (surface) Add Z-hop surface filtering (745ed7f)
- (infill) Add Flowsnake infill pattern (20642c1)
- (seams) Painted seam alignment with blending (8f94e00)
- (ui) Paint-on line drawing for gizmos (a6e9ca7)
- (infill) Detect narrow solid infill via erosion (84778ec)
- (infill) Sparse infill absorption and gap elimination (eeb1077)
- (motion) Klipper SCV cornering velocity (b33b9a5)
- (ui) Show git commit hash in dev/nightly builds (04c936f)
- (seams) Nip/Tuck seam hiding (1dc4a65)
- (perimeters) Configurable perimeter overlap (2eaa625)
- (infill) Increase maximum bridge density (15f5e95)
- (seams) Aligned rear seam placement (979b988)
- (toolchange) Pre-prime extruder (dab3216)
- (toolchange) Disable autoemit of toolchange commands (abb19ee)
- (toolchange) Configurable linear advance in wipe tower (af86565)
- (toolchange) Wipe tower max speed (0411e9d)
- (perimeters) Disable external perimeters first on initial layers (02ae884)
- (ui) Configurable marker size in preview (b033ace)
- (perimeters) Minimum hole size for external perimeters first (92790b2)
- (perimeters) Disable external perimeters first for holes (c4b0f4b)
- (perimeters) Configurable small perimeter threshold (d961c8e)
- (toolchange) Disable filament ramming/cooling in wipe tower (e4350ce)
- (gcode) Update filament types list (9b6c15c)
- (gcode) Increase maximum number of beds (3e3c08e)
- (gcode) Bed/plate number placeholder in filename (d6713c9)
- (motion) Filament max speed override (a9aa8c5)
- (toolchange) Enable pre-heating for all toolchangers (48fdff6)
- (ui) BOSS update checking (e11464b)
- (flow) Per object extrusion multiplier (a987c08)
- (flow) Adjustable first layer and top flow ratio (15126fa)
- (flow) Calculate extrusion width from nozzle diameter (64607ce)
- (perimeters) Reverse extrusion on odd layers (5dc277b)
- (infill) Add CrossHatch infill pattern (fd258d8)
- (perimeters) Alternate extra perimeter (ad686a8)
- (motion) Merge consecutive Klipper SET_VELOCITY_LIMIT (d4e7c86)
- (motion) Per feature type jerk/scv/mcr control (8ffa4f6)
- (infill) Small area infill flow compensation (f559559)
- (ui) Enable seams in preview by default (6f44839)
- (gcode) Double digit date/time in filename (c71a2de)
- (infill) Configurable bridge density (74f84bc)
- (flow) Apply thick bridge flow to external bridges (84413b3)
- (flow) Improve bridge region detection (236b109)
- (infill) Configurable solid infill pattern (35b8486)
- (ui) Z-rotate on import (b81ba28)
- (ui) Show BOSS version (0eabc8f)
🐛 Bug Fixes
- (perimeters) Small perimeter speed base resolution (366da5e)
- (perimeters) Close gaps between solid infill and perimeter (a8b0873)
- (ui) Auto arrange nesting regression (e8e1d85)
- (gcode) Ensure unique names when labeling objects (09a5a82)
- (toolchange) Avoid invalid wipe tower G-code (e2a1013)
- (ui) Show active bed texture when model overlaps (3464469)
- (infill) 3D Honeycomb bridge direction (e7ad383)
💼 Other
- Unify build system with CMake presets and Ninja (1d6cd7a)
⚡ Performance
- (infill) Replace tk::spline with Akima interpolation (8186eac)
PrusaSlicer 2.9.5-beta2 (BOSS)
[2.9.5-beta2] - 2026-04-26
PrusaSlicer 2.9.4 (BOSS)
[2.9.4] - 2025-11-08
PrusaSlicer 2.9.4 Release Notes
🚀 Features
- Aligned rear seam placement (f7f6ebc)
- Pre-prime extruder (25191ba)
- Allow disabling autoemit of toolchange commands (dca698d)
- Make disabling linear advance in wipe tower configurable (e2c8695)
- Set max speed for wipe tower (92953e0)
- Disable external perimeters first for initial layer(s) (2fcc1c6)
- Reduce size of option marker in G-Code preview (67289b7)
- Minimum hole size to enable external perimeters (38362ca)
- Disable external perimeters first for holes (2d58d53)
- Configurable small perimeter length threshold (23e758b)
- Allow disabling filament ramming & cooling moves in wipe tower (9ca33ae)
- Update list of filament types (d7155a8)
- Bump maximum number of beds up (9cb5ae4)
- Add bed/plate number placeholder for output filename (9966bad)
- Add filament max speed override (2c2e30a)
- Enable pre-heating of toolheads for all toolchangers (6b06ecf)
- PrusaSlicer (BOSS) update checking (3777dc4)
- Per object extrusion multiplier setting (509829d)
- Make first layer and top flow ratio adjustable (d5bf8d7)
- Calculate extrusion width based on nozzle diameter (937d28f)
- Reverse extrusion direction on odd layers (ac7e651)
- Add CrossHatch infill pattern (33d81cb)
- Alternate extra perimeter (50b3e3e)
- Per feature type jerk/scv/minimum cruise ratio control (4b6e2de)
- Small Area Infill Flow Compensation (3b60f8a)
- Enable seams in the preview tab by default (b2dc3b7)
- Double digit date and time format in file name. (85dff92)
- Configurable bridge density (4823b3a)
- Configurable solid infill pattern (835eeb6)
- Z-Rotate on import (a42c609)
🐛 Bug Fixes
- Ensure unique names when labeling objects (91a5546)
- Avoid invalid Wipetower G-Code (f108481)
- Show active bed texture when bed model overlaps (bf625ac)
- 3D Honeycomb - switch direction at smallest bridge point (e0dfd25)
🎨 Styling
PrusaSlicer 2.9.4-rc1 (BOSS)
[2.9.4-rc1] - 2025-11-06
PrusaSlicer 2.9.4-rc1 Release Notes
🚀 Features
- Aligned rear seam placement (c56d989)
- Pre-prime extruder (6b3803c)
- Allow disabling autoemit of toolchange commands (820d678)
- Make disabling linear advance in wipe tower configurable (0bcda46)
- Set max speed for wipe tower (a5a7ab1)
- Disable external perimeters first for initial layer(s) (7b33b00)
- Reduce size of option marker in G-Code preview (2951a3b)
- Minimum hole size to enable external perimeters (ac77f59)
- Disable external perimeters first for holes (2e29745)
- Configurable small perimeter length threshold (1f48745)
- Allow disabling filament ramming & cooling moves in wipe tower (c90a34b)
- Update list of filament types (2aa13fc)
- Bump maximum number of beds up (3929a61)
- Add bed/plate number placeholder for output filename (a741618)
- Add filament max speed override (6700577)
- Enable pre-heating of toolheads for all toolchangers (7d4bb4c)
- PrusaSlicer (BOSS) update checking (c7575b3)
- Per object extrusion multiplier setting (5526b96)
- Make first layer and top flow ratio adjustable (807263d)
- Calculate extrusion width based on nozzle diameter (89704f3)
- Reverse extrusion direction on odd layers (c0c1e37)
- Add CrossHatch infill pattern (c299101)
- Alternate extra perimeter (7033926)
- Per feature type jerk/scv/minimum cruise ratio control (1ea08cf)
- Small Area Infill Flow Compensation (6a4caca)
- Enable seams in the preview tab by default (eaf6153)
- Double digit date and time format in file name. (b33a034)
- Configurable bridge density (cbedd22)
- Configurable solid infill pattern (d1e9223)
- Z-Rotate on import (255308f)
🐛 Bug Fixes
- Ensure unique names when labeling objects (140b5c4)
- Avoid invalid Wipetower G-Code (fdba82d)
- Show active bed texture when bed model overlaps (18ce5d4)
- 3D Honeycomb - switch direction at smallest bridge point (dca59d5)
🎨 Styling
PrusaSlicer 2.9.3 (BOSS)
[2.9.3] - 2025-09-13
PrusaSlicer 2.9.3 Release Notes
🚀 Features
- Pre-prime extruder (1ecf392)
- Allow disabling autoemit of toolchange commands (afe3e7d)
- Make disabling linear advance in wipe tower configurable (ccb9178)
- Set max speed for wipe tower (555b54a)
- Disable external perimeters first for initial layer(s) (28d52db)
- Reduce size of option marker in G-Code preview (3210c88)
- Minimum hole size to enable external perimeters (47d2898)
- Disable external perimeters first for holes (41cccd0)
- Configurable small perimeter length threshold (cf2b7fb)
- Allow disabling filament ramming & cooling moves in wipe tower (7867458)
- Update list of filament types (1dfbf12)
- Bump maximum number of beds up (e9284ee)
- Add bed/plate number placeholder for output filename (1c132a6)
- Add filament max speed override (349350f)
- Enable pre-heating of toolheads for all toolchangers (ebcec56)
- PrusaSlicer (BOSS) update checking (6030a5b)
- Per object extrusion multiplier setting (48bd6d1)
- Make first layer and top flow ratio adjustable (9cc0b07)
- Calculate extrusion width based on nozzle diameter (084b9e4)
- Reverse extrusion direction on odd layers (9f8a450)
- Add CrossHatch infill pattern (0fd4457)
- Alternate extra perimeter (929034f)
- Per feature type jerk/scv/minimum cruise ratio control (e6b704d)
- Small Area Infill Flow Compensation (8ef397b)
- Enable seams in the preview tab by default (2a48eed)
- Double digit date and time format in file name. (9e7b112)
- Configurable bridge density (48c4a9a)
- Configurable solid infill pattern (2d7ca76)
- Z-Rotate on import (6c78bd0)
🐛 Bug Fixes
- Ensure unique names when labeling objects (a38bfd1)
- Avoid invalid Wipetower G-Code (a0808e1)
- Show active bed texture when bed model overlaps (c1ac38c)
- 3D Honeycomb - switch direction at smallest bridge point (8158874)
🎨 Styling
PrusaSlicer 2.9.3-rc1 (BOSS)
[2.9.3-rc1] - 2025-09-10
PrusaSlicer 2.9.3-rc1 Release Notes
🚀 Features
- Pre-prime extruder (fa09447)
- Allow disabling autoemit of toolchange commands (f629865)
- Make disabling linear advance in wipe tower configurable (b175c10)
- Set max speed for wipe tower (600f237)
- Disable external perimeters first for initial layer(s) (2337e84)
- Reduce size of option marker in G-Code preview (064e3c8)
- Minimum hole size to enable external perimeters (ba1b832)
- Disable external perimeters first for holes (ee072b1)
- Configurable small perimeter length threshold (3555bd8)
- Allow disabling filament ramming & cooling moves in wipe tower (ecd3a04)
- Update list of filament types (2de3dab)
- Bump maximum number of beds up (1f8e682)
- Add bed/plate number placeholder for output filename (eb7aab1)
- Add filament max speed override (19165d0)
- Enable pre-heating of toolheads for all toolchangers (b3f39e6)
- PrusaSlicer (BOSS) update checking (12b5042)
- Per object extrusion multiplier setting (f7a2c3c)
- Make first layer and top flow ratio adjustable (0e8e342)
- Calculate extrusion width based on nozzle diameter (c59c4ae)
- Reverse extrusion direction on odd layers (4266d04)
- Add CrossHatch infill pattern (e92600d)
- Alternate extra perimeter (dc2655b)
- Per feature type jerk/scv/minimum cruise ratio control (c2d3a05)
- Small Area Infill Flow Compensation (da53455)
- Enable seams in the preview tab by default (0861e3e)
- Double digit date and time format in file name. (883c06c)
- Configurable bridge density (29fc2d8)
- Configurable solid infill pattern (0069d8c)
- Z-Rotate on import (d0d6e64)
🐛 Bug Fixes
- Ensure unique names when labeling objects (e15d551)
- Avoid invalid Wipetower G-Code (bdf7b69)
- Show active bed texture when bed model overlaps (1b0e692)
- 3D Honeycomb - switch direction at smallest bridge point (195dff9)
🎨 Styling
PrusaSlicer 2.9.3-beta1 (BOSS)
[2.9.3-beta1] - 2025-09-02
PrusaSlicer 2.9.3-beta1 Release Notes
🚀 Features
- Pre-prime extruder (5710f25)
- Allow disabling autoemit of toolchange commands (77b954e)
- Make disabling linear advance in wipe tower configurable (4a3c253)
- Set max speed for wipe tower (ea5d051)
- Disable external perimeters first for initial layer(s) (8df3c4b)
- Reduce size of option marker in G-Code preview (d10fe13)
- Minimum hole size to enable external perimeters (c188b69)
- Disable external perimeters first for holes (6c08daf)
- Configurable small perimeter length threshold (2d3abd2)
- Allow disabling filament ramming & cooling moves in wipe tower (f8c99c2)
- Update list of filament types (f48927c)
- Bump maximum number of beds up (e4b8ce8)
- Add bed/plate number placeholder for output filename (ae4d13c)
- Add filament max speed override (4fc3a4d)
- Enable pre-heating of toolheads for all toolchangers (0f2561c)
- PrusaSlicer (BOSS) update checking (cff1780)
- Per object extrusion multiplier setting (ffc81be)
- Make first layer and top flow ratio adjustable (80ae57b)
- Calculate extrusion width based on nozzle diameter (284f6b4)
- Reverse extrusion direction on odd layers (9331a77)
- Add CrossHatch infill pattern (e8b563b)
- Alternate extra perimeter (802fcff)
- Per feature type jerk/scv/minimum cruise ratio control (53c0911)
- Small Area Infill Flow Compensation (708e7a3)
- Enable seams in the preview tab by default (68b92c2)
- Double digit date and time format in file name. (861abcd)
- Configurable bridge density (f4a1231)
- Configurable solid infill pattern (5142f07)
- Z-Rotate on import (898f891)
🐛 Bug Fixes
- Ensure unique names when labeling objects (ca97a20)
- Avoid invalid Wipetower G-Code (d67e674)
- Show active bed texture when bed model overlaps (8d774bb)
- 3D Honeycomb - switch direction at smallest bridge point (64ddd4f)
🎨 Styling
PrusaSlicer 2.9.2 (BOSS)
PrusaSlicer 2.9.2 + Best Of SuperSlicer + Small Area Infill Flow Compensation
⚠⚠⚠ Development Build - Use at your own risk ⚠⚠⚠
PrusaSlicer 2.9.2 release notes
New BOSS Features
- Updated list of filament types
Additional Features & Backports
- Percentage based extrusion width based on nozzle diameter
- Small area infill flow compensation
- Configurable bridge density
- Configurable solid infill pattern
- Configurable top and bottom flow ratio
- Rotate on initial import
- Show seams by default
- Port alternate extra perimeter feature from Cura
- Advanced Jerk (Square Corner Velocity) and Minimum Cruise Ratio control
- Improved 3D Honeycomb infill (prusa3d#6434 | OrcaSlicer/OrcaSlicer#4425)
- Ported CrossHatch Infill from BambuStudio
- Pre-heating of toolheads for all toolchangers.
- Per filament maximum speed override.
- Include a placeholder for the bed/plate number in the output filename.
- Increase the maximum number of beds to 25.
- Show the active bed texture when the bed model overlaps.
PrusaSlicer 2.9.2-rc2 (BOSS)
PrusaSlicer 2.9.2-rc2 + Best Of SuperSlicer + Small Area Infill Flow Compensation
⚠⚠⚠ Development Build - Use at your own risk ⚠⚠⚠
PrusaSlicer 2.9.2-rc2 release notes
New BOSS Features
- Updated list of filament types
Additional Features & Backports
- Percentage based extrusion width based on nozzle diameter
- Small area infill flow compensation
- Configurable bridge density
- Configurable solid infill pattern
- Configurable top and bottom flow ratio
- Rotate on initial import
- Show seams by default
- Port alternate extra perimeter feature from Cura
- Advanced Jerk (Square Corner Velocity) and Minimum Cruise Ratio control
- Improved 3D Honeycomb infill (prusa3d#6434 | OrcaSlicer/OrcaSlicer#4425)
- Ported CrossHatch Infill from BambuStudio
- Pre-heating of toolheads for all toolchangers.
- Per filament maximum speed override.
- Include a placeholder for the bed/plate number in the output filename.
- Increase the maximum number of beds to 25.
- Show the active bed texture when the bed model overlaps.