Square grid that fits the terrain

Hello everyone!
I’m begginer with this great tool and I’m looking for some tutorials and informations that deals with a grid that fits the terrain.
The following image has been taken on this forum. It shows what I actually want, but I want it with squared cells instead of hex.

Thank you for your reply ! :slight_smile:

Can you post a link to the original post above?

Yes, here it is:
https://forums.unrealengine.com/development-discussion/content-creation/24566-custom-shaped-terrain