I'm working on a project and need to build a house. The basics of the 1st floor is done, but I have to add a foundation to it due to the landscape around the house is uneven, like on a real house.
To make the foundation, I select the bottom vertices of my outer wall on the house, and extrude them downwards, to later separate the extruded part into what will be the foundation. However, when I extrude, the mesh goes berserk, throwing and stretching faces to infinity and beyond.
Anyone know why this is happening?