--- title: "Basic Tutorial | Merge meshes with common borders" slug: "cyclone-3dr-exercise-merge-meshes-with-common-borders" updated: 2026-09-07T11:51:19Z published: 2026-09-07T11:51:19Z canonical: "rcdocs.leica-geosystems.com/cyclone-3dr-exercise-merge-meshes-with-common-borders" --- > ## 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 | Merge meshes with common borders > [!TIP] > Open the file **Victory.3dr** ([download](https://www.cyclone3dr.com/download_helper.php?File=Cyclone3DRSampleData/Victory.3dr)). As the 3 meshes (**Main part**, **Wing1** and **Wing2**) have common borders, we can create a closed mesh (so a closed volume). To do so, select the three meshes then go to [Merge Common Borders](/v1/docs/cyclone-3dr-mergebordersc), select the option **Do not modify borders** and click **OK**. You will have only one mesh without any holes. ![image2019-9-16_16-58-59.png](https://cdn.document360.io/820e11db-8ed5-45ae-ac86-f6b77dcb2aa7/Images/Documentation/image2019-9-16-16-58-59.png) The merged mesh