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| Cura | |
|---|---|
| Name | Cura |
| Developer | Ultimaker |
| Initial release | 2011 |
| Latest release | 5.4 (example) |
| Programming language | C++, Python |
| Operating system | Microsoft Windows, macOS, Linux |
| License | LGPLv3 |
| Website | Ultimaker.com/software |
Cura is a widely used slicing application for 3D printing that translates 3D model geometry into machine instructions for Fused Deposition Modeling printers. Originally developed by David Braam and later maintained by Ultimaker, Cura integrates with printers from Ultimaker as well as many third-party vendors and open-source projects. The software provides configurable profiles, plugin support, and a user interface designed to accommodate both novice users and advanced technicians working with devices such as the Prusa i3 MK3, Creality Ender 3, and industrial Raise3D platforms.
Cura functions as an intermediary between Computer-Aided Design exports like STL, OBJ, and 3MF files and the toolpath languages used by printers, notably G-code and vendor-specific variants. The application supports layered slicing strategies, infill patterns, and temperature management compatible with materials from suppliers such as ColorFabb, MatterHackers, and eSUN. Cura offers graphical previews and integrates with model repositories including Thingiverse, MyMiniFactory, and Cults3D to streamline the transition from digital asset to physical object.
Development began in 2011 by David Braam to provide a user-friendly slicer for Ultimaker hardware during the rise of desktop maker movement ecosystems like Hackspace communities and fabrication labs at institutions such as the Fab Lab network. As open-source momentum increased, Cura incorporated code and ideas from projects like Slic3r and interacted with standards advocated by RepRap developers. Ultimaker acquired stewardship of Cura while collaborating with contributors from companies including Prusa Research and community volunteers active on platforms such as GitHub and Stack Overflow. Major milestones include the introduction of the Marketplace for plugins, the shift to a new Cura Engine architecture, and periodic UI redesigns aligning with releases coordinated around events like Formnext and Maker Faire.
Cura provides slice parameterization covering layer height, shell count, infill density, and support structures compatible with materials such as Polylactic acid, ABS, PETG, and composites from Markforged-style workflows. It implements print sequence control, brim and skirt generation, and adaptive layer height options influenced by research from ETH Zurich and industrial partners like Siemens. Advanced features include experimental support for multimaterial toolpaths compatible with dual-extrusion printers from BCN3D and Ultimaker S5, integration with build-plate levelling routines used by BLTouch and OctoPrint-managed farms, and special modes for resin printing workflows when combined with slicers developed by Prusa Research or Formlabs.
Cura's plugin architecture allows interoperability with third-party tools such as Netfabb, Meshmixer, and workflow platforms like TinkerCAD and Onshape. Its preview engine displays estimated print time and material usage alongside G-code visualisation compatible with viewers used in Simplify3D and Repetier-Host ecosystems.
Cura natively imports meshes in STL, OBJ, and 3MF formats and exports G-code compatible with firmware projects including Marlin, Repetier-Firmware, and Klipper. Profiles for printers such as Prusa i3 MK3, Creality Ender 3, Ultimaker 2+, and industrial systems from Stratasys are distributed via the application and the Ultimaker Marketplace. Cura also supports toolpath exchange through formats used by slicing engines like Cura Engine and interoperates with slicing preview tools that accompany MatterControl and Slic3r PE.
Typical workflows begin with model acquisition from repositories such as Thingiverse or authoring in CAD systems like SolidWorks, Autodesk Fusion 360, or FreeCAD, then importing into Cura for orientation, scaling, and support generation. Users select material profiles from vendors including ColorFabb and Polymaker, tune print parameters, and use plugins for tasks such as automatic model repair via Netfabb services or lattice generation influenced by research from MIT and NASA labs. Output G-code is transferred to printers via SD card, USB, or network integration with systems such as OctoPrint and Ultimaker Digital Factory.
Cura supports profile management facilitating reproducibility for production runs in settings like university makerspaces at Massachusetts Institute of Technology or professional prototyping shops working with BMW and Siemens teams. Its user tiers range from "recommended" settings for hobbyists to "custom" modes for engineers and technicians at companies such as Volkswagen engaging in additive manufacturing validation.
Cura's codebase and ecosystem are maintained by contributors at Ultimaker and volunteers on GitHub, with issue tracking and feature requests coordinated through platforms like Launchpad and community forums hosted on sites including Reddit (r/3Dprinting) and Stack Exchange networks. The Ultimaker Marketplace enables developers from projects like OctoPrint, CuraEngine, and independent studios to publish plugins and printer profiles. Academic collaborations and hacking events at conferences such as IFA and CES have influenced feature roadmaps, and Cura participates in standards discussions alongside organizations like ASTM International and ISO for additive manufacturing.
Cura has been praised in reviews by publications such as Make (magazine), Wired, and IEEE Spectrum for lowering the barrier to entry for desktop 3D printing and enabling distributed manufacturing initiatives highlighted in reports from McKinsey & Company and Deloitte. Its adoption by educational institutions including Georgia Institute of Technology and community labs supported adoption of filament-based prototyping in STEM curricula. Criticisms have included concerns about UI complexity during major revisions and competition from commercial slicers like Simplify3D; nevertheless, Cura’s open-source model and extensive printer support have made it a central tool in ecosystems involving companies such as Prusa Research, Creality, Ultimaker, and service bureaus like Shapeways.
Category:3D printing software