# How to export a model (from e.g., Blender) to a finite difference grid?

**URL:** https://discourse.paraview.org/t/how-to-export-a-model-from-e-g-blender-to-a-finite-difference-grid/15669
**Category:** ParaView Support
**Tags:** python
**Created:** [October 31, 2024, 7:04am UTC](https://discourse.paraview.org/t/how-to-export-a-model-from-e-g-blender-to-a-finite-difference-grid/15669 "2024-10-31T07:04:47Z")
**Posts on this page:** 4
**Page:** 1

<div class="post-metadata">

### Author: ![aritzy](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/a/a183cd/32.png) [@aritzy](https://discourse.paraview.org/u/aritzy)
#### Post date: [October 31, 2024, 7:04am UTC](https://discourse.paraview.org/t/how-to-export-a-model-from-e-g-blender-to-a-finite-difference-grid/15669/1 "2024-10-31T07:04:47Z")

</div>

Hoping we can get some help on this. We want to do electromagnetic simulations and need a regular finite difference mesh to do so. We want to be able to export a model (from e.g., Blender) to a finite difference grid and specify the start, stop, and step of each x, y, and z axis.

We tried this with Blender using the re-mesh \> blocks modifier. It looks promising, but it does not yield a dense mesh as needed for EM simulations.

We are open to paying for tools, but the ~$15k cost of the big names (Altair, etc.) are out of our reach at the moment.

Thank you in advance for any help or insights!

---

<div class="post-metadata">

### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [October 31, 2024, 8:52am UTC](https://discourse.paraview.org/t/how-to-export-a-model-from-e-g-blender-to-a-finite-difference-grid/15669/2 "2024-10-31T08:52:59Z")

</div>

> [@aritzy](#):
>
> We tried this with Blender using the re-mesh \> blocks modifier. It looks promising, but it does not yield a dense mesh as needed for EM simulations.

Are you using ParaView at any point here ?

---

<div class="post-metadata">

### Author: ![aritzy](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/a/a183cd/32.png) [@aritzy](https://discourse.paraview.org/u/aritzy)
#### Post date: [November 1, 2024, 5:08am UTC](https://discourse.paraview.org/t/how-to-export-a-model-from-e-g-blender-to-a-finite-difference-grid/15669/3 "2024-11-01T05:08:14Z")

</div>

Hello,

Yes. After EM simulation, a .h5 file will be exported and loaded into ParaView after transforming it to a .vtk file.

---

<div class="post-metadata">

### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [November 4, 2024, 8:39am UTC](https://discourse.paraview.org/t/how-to-export-a-model-from-e-g-blender-to-a-finite-difference-grid/15669/4 "2024-11-04T08:39:51Z")

</div>

Ok, can you share that .vtk file ?