In the original Subnautica. I built my foundation, and I don’t know how to get walls.
You will either need to make habitat compartments or find the multi purpose room blueprint
I don't think you can make, or ever could make, flat walls
I think he means reinforcements, well you need Lithium and Titanium for that. And the wall you build them on cannot be occupied by something else like windows.
Here is the article:
https://subnautica.fandom.com/wiki/Reinforcement_(Subnautica)
It’d be really cool if you could build vertical foundations and make cubic bases.
I got the multi-purpose room from that island and it works great. Thanks!
What do you think?