# Creating Mid-Plane

## Creating Mid-Plane

Before mirroring the half of the drive we've created, we need to create a mid-plane.

Make sure you're in the `Assemble` tab in the ribbon.  Select the drop down for `Plane`, and select `Offset from Plane`. 

![Plane Menu](https://3510336827-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M7yGVyBrcpSR8SDSikj%2F-MfGCZU6I3ICqRQaXcB1%2F-MfGIJ50gcF-CU3cyW6J%2Fimage.png?alt=media\&token=74b4f8f5-37c4-4a88-bf2f-07c13bebff3f)

Now select the thickness of the cross brace.  

![Plane Selection](https://3510336827-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M7yGVyBrcpSR8SDSikj%2F-MfGCZU6I3ICqRQaXcB1%2F-MfGIWofti1TcupTlOtD%2Fimage.png?alt=media\&token=abb85348-9e99-45d9-9348-7b5e1b5fb53a)

The cross brace I chose was 35 holes long.  Each hold is 0.5", so this c-channel is 17.5" long.  I have the plane coming in `-(17.5/2)` to put a mid-plane in the center of the cross brace.  Once this is done, click the green check mark. 

![Dimension Constraining the Plane](https://3510336827-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M7yGVyBrcpSR8SDSikj%2F-MfGCZU6I3ICqRQaXcB1%2F-MfGIlIbR_YJ0HU4VOAp%2Fimage.png?alt=media\&token=3a50674b-f388-4f90-b094-756d9853dd8e)

If completed correctly, you should have an orange plane in the center of your cross brace. 

![Completed Mid-Plane](https://3510336827-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M7yGVyBrcpSR8SDSikj%2F-MfGCZU6I3ICqRQaXcB1%2F-MfGJIGmmQmNoBSMT-qb%2Fimage.png?alt=media\&token=eac03906-62d4-4932-b2bd-1ab1c5b1fdf2)

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## Contributors to this Article:

* Jess - EZ