在 3D 打印的世界里，打印机只是执行者，而真正决定打印成败、精度与效率的，是背后的大脑 —— 切片软件。它将三维模型转化为打印机可识别的指令代码（G-code）。

作为该领域的绝对王者，Ultimaker Cura 凭借其开源、免费且功能强大的特性，占据了全球数百万用户的桌面。2026 年，随着 Cura 5.12 版本的发布，这款老牌软件再次刷新了行业标准，将人工智能算法与极致的工作流体验完美融合，让无论是新手还是资深极客都能轻松驾驭复杂的打印任务。

Ultimaker Cura 中文版

什么是 Ultimaker Cura？

Ultimaker Cura 是由荷兰 3D 打印巨头 Ultimaker 开发的开源切片软件。它支持超过 400 种 3D 打印机和数千种耗材，是全球兼容性最强、用户基数最大的切片工具。

更智能的支撑生成算法
支撑结构一直是 3D 打印的痛点：难拆除、留痕迹、耗材料。Cura 进一步优化了其树状支撑和正常支撑的逻辑。
自适应接触点：算法能更精准地判断模型悬垂角度，仅在必要处生成支撑，减少接触面积。
拆除体验升级：优化了支撑与模型的连接界面，使得支撑更容易剥离，大幅减少后期打磨时间。
节省材料：据测试，在复杂模型上，新版支撑算法可节省高达 15%-20% 的支撑材料。

增强的切片引擎性能
面对高分辨率模型（如数千万个三角面片），旧版本往往显得力不从心。5.12 版本对底层切片引擎进行了重构：
速度提升：大型模型的切片计算速度显著提升，等待时间缩短 30% 以上。
内存优化：降低了高复杂度模型处理时的内存占用，防止软件崩溃。
路径规划：更平滑的移动路径，减少了打印头的急停急转，提升表面光洁度。

工作流与用户体验 (UX) 改进
Cura 继续贯彻“直观易用”的设计理念：
自定义视图增强：用户可以更灵活地定制图层视图，通过颜色映射快速发现潜在问题（如壁厚过薄、悬垂过大）。
配置文件管理：改进了打印机和耗材配置文件的导入/导出逻辑，方便团队共享设置。
错误提示智能化：当检测到模型无法打印或设置冲突时，提供更明确的修复建议，而非晦涩的错误代码。

广泛的硬件与耗材支持
作为行业标准，Cura 持续扩充其设备库：
新增打印机配置文件：涵盖了最新发布的 Creality, Prusa, Bambu Lab (通过插件), Anycubic 等品牌的新机型。
耗材数据库更新：集成了更多第三方耗材厂商的详细打印参数（温度、流速、冷却策略）。

为什么选择 Cura？

对比其他切片软件 Cura 拥有更庞大的插件生态和更友好的新手引导界面，PrusaSlicer 在某些特定功能（如有机支撑）上各有千秋，但 Cura 的通用性更强。Cura 免费且功能已足以媲美甚至超越许多付费软件，且更新频率更高。厂家软件通常功能简陋且仅支持自家机器，Cura 则提供了深度自定义和专业级控制。

Ultimaker Cura 再次证明了其作为 3D 打印软件领导者的地位。它不仅是一个工具，更是一个不断进化的生态系统。无论你是刚刚购买第一台 3D 打印机的爱好者，还是管理着数十台设备的工程师，Cura 都能提供可靠、高效且智能的解决方案。

官方主页

What’s new in Ultimaker Cura 5.12.0
Mar 5, 2026
New features and improvements:
Bridging behavior over rectangular empty spaces and infill are now placed in a smarter way. The bridge lines are now anchored to layers below where possible. Bridge lines can now also be interlaced for improved quality.
Fewer mistakes, less wasted time. Settings for disabled extruders are now greyed out to prevent “ghost editing,” where you might spend time fine-tuning the Printing Temperature or Retraction Distance for Extruder 2, only to realize later that the entire model was set to print with Extruder 1. Additionally, a warning appears in the Preview stage if your model is hidden because an extruder is unchecked.
Updated combing behavior for thin parts so it doesn’t ooze over the walls by updating the behavior for Inside Travel Avoid Distance
Added a warning in the preview if the reason you are not seeing your model is that the extruder is unchecked
Self-intersecting infills like Grid, Triangular, and Cubic are hidden for some printers in recommended mode because they introduce artifacts at high speeds. They are still available in Custom mode
Added height of the layer in preview mode in mm in addition to the layer number, contributed by @HellAholic
Added a pop-up to help with using the Select Face mode when rotating a model, resolves #21359, contributed by @HellAholic
Improved the reliability and maintainability of the Cura UI and Post Processing plugin, contributed by @HellAholic
Added a new button under the Help dropdown to quickly open the log files, contributed by @HellAholic
Updated the Filament Change script of the Post Processing plugin to support multiline Gcode Before and Gcode After, contributed by @hobbe and @GregValiant
Updated the Z-Hop on Travel Post Processing script to include an option for Support Interface Only, contributed by @GregValiant
Updated the Post Processing plugin with a bigger text area in the UI to allow for easier editing of multiple lines of Gcode, contributed by @HellAholic
Updated the Advanced Cooling Fan Control Post Processing plugin to add an Enable and Fan Jump Start setting, contributed by @GregValiant
Updated the Display Info on LCD Post Processing plugin to reflect Filament Cost and allow for the adjustment of the Cura estimated time, contributed by @GregValiant
Updated the Purge Lines and Unload Post Processing plugin so the CUSTOM addition in the Gcode doesn’t trigger an error, contributed by @GregValiant
New Settings:
New Honeycomb and Octagon infill types ensure the toolpath never crosses its own path on the same layer, reducing the chance of the nozzle hitting the infill during printing. Infill Start/End Move settings move the infill starts away from the wall to prevent surface blobs from a nozzle traveling to start a new infill line.
Introduced Infill Start/End Move Inwards Length settings that add an extra line at the beginning and the end of your infill to prime the infill and prevent blobs on the outside wall
Introduced Infill Skin Support to consolidate and replace Extra Infill Lines to Support Skin, Skin Edge Support Layer, and Bridging Over Infill Settings.
Introduced a Middle option to the Z Seam Positions, contributed by @GregValiant @HellAholic
Introduced a Print Estimation Factor to the Printer Settings that allows you to adjust the predicted printing time when you notice it deviates consistently from reality, contributed by @HellAholic
Bug fixes:
Improved responsiveness when working with printers that are connected over Digital Factory
Improved Scarf Seam behavior when used on overhangs and the visualization of these seams in the preview for improved troubleshooting
Added an option to abort sending a cloud print job if the loading bar gets stuck
Updated the behavior for One At a Time print jobs to reduce the chance of collisions at the end of the printing process
Extruder End Gcode is now added to the end of the print process before Machine End Gcode, resolves #18018
Fixed an issue where a model was still displayed as unprintable after switching the assigned extruder
Fixed an issue where unretracted travel moves could be generated over top surfaces when the Inside Travel Avoid Distance could not be applied. Such moves are now retracted instead
Fixed an issue where paint strokes on rotated models would not be picked up correctly when slicing
Fixed an issue where combing would add a lot of unnecessary travel due to a very small slit in layer outline, resolves #21381
Updated the behavior of the preview tab when dragging and dropping in a Gcode file, resolves #21110
Fixed an issue where enabling Z hop when retracted would apply the Z hop twice and move the nozzle to X0 Y0 at start of the print, resolves #21132
Polished the appearance and behavior of combobox controls in the Preferences dialog, making them more consistent and easier to use.
Fixed an issue that would cause a crash if the model was reloaded inside the paint mode, resolves #21304
Fixed an issue where Top Surface Expansion was being applied inside the model without any Top Surface area
Fixed an issue where the flow of a fractional layer was not adjusted as expected
Fixed an issue where UV unwrapping sometimes failed on complex shapes, leading to incorrect color or material painting
Fixed a crash that could occur when exporting and sending very large print jobs over the network or Digital Factory Cloud
Improved the robustness of network printing to reduce crashes and error states when communication with printers fails
Fixed an issue where the configured build volume temperature limits could be bypassed in certain cases
Updated the Annealing or Drying Post Processing plugin so it now also works on UltiMaker 3D printers, contributed by @GregValiant
Bugs resolved since the Beta release
Fixed crashes when loading certain project files (3MF) on Linux
Prevented slice crashes when trying to paint on support blockers or modifier meshes by not allowing that unsupported operation
Fixed a bug where Overhanging Wall Speeds would be applied to tree support in multi extrusion printjobs
Updated bridging behavior so the lines prefer to align with the axis if the geometry allows
Fixed an issue where bridging logic caused large, inconsistent flow changes on some surfaces, leading to visible blobs and rough areas; flow is now more stable in those regions.
Corrected how flow is applied when using gradual flow adjustments so that extrusion transitions are smoother, align better with the expected behavior, and more consistent, improving overall quality.
Fixed a case where infill extrusion moves could skip the intended inward move, improving infill start placement and reducing small artefacts at infill boundaries.
Addressed a CuraEngine issue that caused slicing to crash when generating the inward infill move, making slicing more robust for tricky geometries.
Removed the nozzle move to X0 Y0 when Z Hop When Retracted was enabled, resolves #21132
Fixed a bug where the Infill Skin Support would move through the Extra Infill Walls
Fixed an issue where bridging regions could contain many small dotted line segments, improving both appearance and strength of bridges.
Fixed a bug where 3MFs with custom materials would not be loaded properly
Updated file saving behavior so it can handle bigger files to be saved more reliably
Displayed clearer messages when using painting and face‑alignment which are unavailable in compatibility mode, resolves #21168
Gcode now always sends the XY positions when either axis value is changed to make sure non-compliant machines still accept Cura-generated Gcode
Updated the material weight to correctly display for UltiMaker PPS CF and Nylon CF Slide materials
Printer definitions, profiles and materials:
We’ve overhauled our print settings for the UltiMaker High Speed S-series to ensure your parts aren’t just high-quality, but also high-performance. These updates deliver higher-quality prints at faster speeds, whether for prototyping or production.
Updated wall settings for the UltiMaker S6 and S8 to improve wall strength
Updated infill, skin, and shell settings for the UltiMaker S6 and S8 to reduce printing time and improve printed part quality
Introduced Visual Intent for ABS and PETG for the S8
Updated Retraction settings to reduce oozing and stringing in the UltiMaker S6 and S8
Introduced a generic ASA profile for the Factor 4
Updated the Brim Gap settings for UltiMaker 2+ Connect, contributed by @HellAholic, resolves #21258
Introduced Elegoo Centauri Carbon, contributed by @darthmolen
Introduced Toybox Alpha name to include Toybox Alpha Three, contributed by @lukbrew25
Updated settings for Elegoo Neptune 2 and Flsun V400, to have better default top layers with the infill set to 100%, contributed by @Asterchades
Community Translations:
Updated Japanese translations by @h1data
Brazilian Portuguese by @Patola
Bonus Cura Cloud Demo:
Cura Cloud is an online version of Cura designed for fast, confident slicing within the UltiMaker ecosystem. It lives in UltiMaker Digital Factory – ideal for connected printers, beginners, and anyone who values simplicity. We’ve made it available for everyone to try out, even without an account.

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