# How to build a 3D Magnetometric resistivity Forward model

**URL:** <https://simpeg.discourse.group/t/how-to-build-a-3d-magnetometric-resistivity-forward-model/227>\
**Category:** DC and IP\
**Created:** [May 25, 2021, 2:23pm UTC](https://simpeg.discourse.group/t/how-to-build-a-3d-magnetometric-resistivity-forward-model/227 "2021-05-25T14:23:19Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Jump](https://avatars.discourse-cdn.com/v4/letter/j/47e85d/32.png) [@Jump](https://simpeg.discourse.group/u/Jump)\
**Post date:** [May 25, 2021, 2:23pm UTC](https://simpeg.discourse.group/t/how-to-build-a-3d-magnetometric-resistivity-forward-model/227/1 "2021-05-25T14:23:19Z")

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How can i use the static/DC model to build a 3D Magnetometric resistivity Forward model. Thanks very much.

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**Author:** ![sgkang09](https://yyz2.discourse-cdn.com/free1/user_avatar/simpeg.discourse.group/sgkang09/32/8_2.png) [@sgkang09](https://simpeg.discourse.group/u/sgkang09)\
**Post date:** [August 20, 2021, 4:29pm UTC](https://simpeg.discourse.group/t/how-to-build-a-3d-magnetometric-resistivity-forward-model/227/2 "2021-08-20T16:29:26Z")

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Sorry for being late!

You should be able to use the fdem code and set the low enough frequency. e.g. 1e-5 hz.

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**Author:** ![Jump](https://avatars.discourse-cdn.com/v4/letter/j/47e85d/32.png) [@Jump](https://simpeg.discourse.group/u/Jump)\
**Post date:** [September 7, 2021, 8:05am UTC](https://simpeg.discourse.group/t/how-to-build-a-3d-magnetometric-resistivity-forward-model/227/3 "2021-09-07T08:05:05Z")

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Thank you very much. I’ll try it 😃