Frequently Asked Questions2019-03-19T14:55:39+00:00

Frequently Asked Questions

XirusCAD Technology

Why XirusCAD®?2019-02-06T09:39:09+00:00

Subdivision, bridges, Y-branches, smooth surface patches, starpoint creation with G2 or higher continuity and much more! XirusCAD® provides a new, intuitive CAD solution for organic and freeform modeling.

XirusCAD® simulates immediate responsiveness to a broad range of geometrical parameters that are key for complex 3D modeling such as

  • direct control of tangents
  • direct control of curvature
  • direct access to the digital object through interpolating control points
  • watertight junctions with immediate smoothness control
  • subdivision and local refinement with controllable smoothness
  • more localized control than NURBS and fewer parameters.

Download XirusCAD now from the download page.

What are the advantages of XirusCAD® compared to standard CAD?2018-11-14T14:36:40+00:00

NURBS: Standard CAD that is based on NURBS has several drawbacks which make the modeling process tedious and time-consuming. The consequences of the limitations of NURBS are non-interpolating control points, non-local refinement, non-intuitive and challenging handling of smoothness, junctions or curvature. The reason for these limitations are the underlying mathematics. XirusCAD® implements a superior digital geometry representation that has been developed specifically to overcome today’s limitations in 3D CAD.

Subdivision and polygons: Classical subdivision has the drawback that the control-net does not interpolate the limit surface and uv-mapping or solid modeling is more difficult than with NURBS, whereas polygon meshes do interpolate a surface but do not allow for smooth modeling.

Mirrakoi®’s newly developed digital geometry representation provides new powerful means for 3D CAD which simplify the task of complex 3D modeling, reduce training and learning costs, improve efficiency and accuracy during the modeling process and also allow for a superior design experience.

A detailed comparison between the aforementioned technologies can be found at

Is XirusCAD® compatible with NURBS?2018-11-14T14:36:50+00:00

Yes. XirusCAD® is 100% compatible with NURBS. A CAD object that is modeled with XirusCAD® can be converted to NURBS at any moment during the modeling process. A “NURBS-to-augmented CAD command” is also available in order to convert a NURBS object into the native XirusCAD® geometry.

Is XirusCAD® compatible with meshes?2018-11-14T14:37:01+00:00

Yes. XirusCAD® is 100% compatible with meshes. A CAD object that is modeled with XirusCAD® can be converted to a mesh at any moment during the modeling process.

A mesh to XirusCAD® command will be released in the near future.

XirusCAD Download and Installation

For which Rhino versions is XirusCAD® available?2019-02-06T09:38:24+00:00

XirusCAD® is currently developed for Rhino 6 and Rhino 5. Note that for Rhino 6 compatibility, version 6.10 or higher needs to be installed (6.9 and previous are not compatible with XirusCAD). If you have Rhino 6 already installed and it says it’s up to date, you can manually install the update by downloading the installer from McNeel’s website.

Does a free trial version of XirusCAD® exist?2019-02-06T09:37:44+00:00

Yes. A free trial version is available on our website.

How to install XirusCAD®?2019-02-06T09:42:28+00:00

1. Download XirusCAD®

1.1. Download XirusCAD® from the download page. You need to accept the terms and conditions of our End-User License Agreement by checking the checkbox next to the button.
1.2. The installer package of XirusCAD® will be downloaded to your computer.

2. Installation

2.1. Close Rhino. Double-click on the file XirusCADInstaller and it will automatically install XirusCAD® as a Rhino-plugin.
2.2. Restart Rhino. When launching XirusCAD®, you will be asked to activate your license. Both online and offline activation is possible. Follow the instructions of the License Wizard.
The following video shows step-by-step how to install XirusCAD® on your machine:
How to uninstall XirusCAD®?2018-11-14T15:03:30+00:00

To uninstall XirusCAD®, close all Rhino applications. Then, go to Control Panel>Uninstall a program and then find the XirusCAD® uninstaller on the list.

XirusCAD Support

Is there a list of XirusCAD® commands?2020-06-23T09:42:14+00:00

The complete list of XirusCAD® commands (including videos explaining the commands) can be found at

The video documentation is also available on our YouTube channel

How do I contact the Mirrakoi team?2020-06-23T09:42:46+00:00

You can use our contact form.

How do I get informed about the latest news?2020-06-23T09:44:11+00:00

Mirrakoi is present on all mainstream social media channels. Follow us on:




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