> For the complete documentation index, see [llms.txt](https://manual.karamba3d.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://manual.karamba3d.com/3-in-depth-component-reference/3.1-model/3.1.3-modify-model.md).

# 3.1.3: Modify Model

If you need to change the nodal positions of an existing model, the **“ModifyModel”** component is useful. The **“Pt”** input expects the list of new points to be used as the model's new nodal positions (see Fig. 3.1.3.1). This can be used, for example, to impose imperfections based on the structure's first buckling mode.

<figure><img src="/files/zt3KrmFIB1R8TyB84EA0" alt=""><figcaption><p> Fig. 3.1.3.1: The “ModifyModel”-component changes the nodal positions of model.</p></figcaption></figure>

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