---
title: "Basic Tutorial | Move to the Coordinate System (CS) of a 3D model"
slug: "cyclone-3dr-create-a-cs-related-to-a-3d-model"
updated: 2026-09-07T11:51:23Z
published: 2026-09-07T11:51:23Z
canonical: "rcdocs.leica-geosystems.com/cyclone-3dr-create-a-cs-related-to-a-3d-model"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://rcdocs.leica-geosystems.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Basic Tutorial | Move to the Coordinate System (CS) of a 3D model

Even if the measure does not need to be placed in a reference coordinate system, you may have to change the current coordinate system in order to make it coherent with the object. For example, on a facade, you may want to have the Z axis orthogonal to the wall.

> [!TIP]
> Open the file **BestFitOnRef.3dr** ([download](https://www.cyclone3dr.com/download_helper.php?File=Cyclone3DRSampleData/BestFitOnRef.3dr)).

This file contains two meshes: **Theoretical Dam (bad CS)** and **Theoretical Dam (good CS)**.

Select and show only the mesh **Theoretical Dam (bad CS)** (you will probably need to type **A** to make a [Zoom All](/v1/docs/cyclone-3dr-zoomallc)).

Press **X**, **Y** or **Z:** you can see that the axes of the coordinate system are not coherent with the mesh.

Now select and show only the other mesh **Theoretical Dam (good CS)**.

Press again **X**, **Y** or **Z**: now the axes are coherent.

**Aligning the dam**

Show only the mesh **Theoretical Dam (bad CS)**, select it and go to [Geometric Registration](/v1/docs/cyclone-3dr-geometricregistrationc).

You must follow an order when using the command.

So first, click ![add.jpg](https://cdn.document360.io/820e11db-8ed5-45ae-ac86-f6b77dcb2aa7/Images/Documentation/add.jpg) and use the option **Vertex End** to place the **Source point** in the bottom left corner of the dam. A new dashed coordinate system will appear where you have clicked the point (see above). Keep (0, 0, 0) for **Destination point** as we want to have the bottom left corner of the dam as the origin of the new frame.

Then, change the **Main axis direction**. Choose **Y**, and click ![axis.jpg](https://cdn.document360.io/820e11db-8ed5-45ae-ac86-f6b77dcb2aa7/Images/Documentation/axis.jpg) to define the new Y axis. For example, use ![arrowRight.jpg](https://cdn.document360.io/820e11db-8ed5-45ae-ac86-f6b77dcb2aa7/Images/Documentation/arrowRight.jpg) and click on the vertical face (1 in the image below). Then reverse the direction ![arrowDirections.jpg](https://cdn.document360.io/820e11db-8ed5-45ae-ac86-f6b77dcb2aa7/Images/Documentation/arrowDirections.jpg) .

Finally, define the **Second axis direction** similarly by choosing **Z** and clicking on ![secondAxis.jpg](https://cdn.document360.io/820e11db-8ed5-45ae-ac86-f6b77dcb2aa7/Images/Documentation/secondAxis.jpg) . For example, use ![arrowRight.jpg](https://cdn.document360.io/820e11db-8ed5-45ae-ac86-f6b77dcb2aa7/Images/Documentation/arrowRight.jpg) and click on the horizontal face (2 in the image below).

You can now click **OK**.

![im1_en.PNG](https://cdn.document360.io/820e11db-8ed5-45ae-ac86-f6b77dcb2aa7/Images/Documentation/im1-en.PNG)

Expected result

Press **A** to do a zoom all, and then **X, Y** or **Z** on the keyboard. You will see that all the axes are now coherent with the model.

> [!CAUTION]
> ### Important
> 
> When using [Geometric Registration](/v1/docs/cyclone-3dr-geometricregistrationc), the selected objects will be moved to the new position. The 3D coordinates of the object are updated. This command differs from [Define UCS](/v1/docs/cyclone-3dr-defineucsc) command.