# CAD editing

**URL:** <https://www.simscale.com/forum/t/cad-editing/99703>\
**Category:** Using SimScale\
**Created:** [January 20, 2025, 9:54am UTC](https://www.simscale.com/forum/t/cad-editing/99703 "2025-01-20T09:54:42Z")\
**Posts on this page:** 1\
**Showing post:** 3

<div class="post-metadata">

**Author:** ![igaviano](https://www.simscale.com/forum/user_avatar/www.simscale.com/igaviano/32/73967_2.png) [@igaviano](https://www.simscale.com/forum/u/igaviano)\
**Post date:** [January 21, 2025, 9:40pm UTC](https://www.simscale.com/forum/t/cad-editing/99703/3 "2025-01-21T21:40:53Z")

</div>

Hi @Leen_Mohamed, thanks for posting on the Forum and welcome to the SimScale Community 🤝

In addition to @nelta’s comments, there is an import option for STL files called ‘[Optimize for LBM / PWC](https://www.simscale.com/docs/analysis-types/incompressible-lbm/#:~:text=While%20uploading%20your%20CAD%20model%20for%20LBM%20or%20wind%20comfort%20simulations%20it%20is%20recommended%20to%20toggle%20on%20%E2%80%98Optimize%20for%20LBM%20/%20PWC%E2%80%99.).’ When selected, the CAD model is imported as a faceted geometry, which is specifically tailored for use in PWC/LBM simulations - make sure it’s toggled off.

If you’d like us to take a closer look at your project, please post a project link (**[here](https://www.simscale.com/forum/t/guide-to-clear-and-understandable-forum-posting/99461)**’s a guide explaining how).

Cheers  
Igor

---

_[View the full topic](https://www.simscale.com/forum/t/cad-editing/99703)._