Ahh I see. I was trying to place a sloped ceiling between 2 walls for a staircase but you can't compound them like that, thought I might be able to do a bit of trickery. I'll keep an eye out for the others too.

Ho! I forgot to specify this :

In the Legacy game version = A lot more blocks were combinable and why I have it in my local Blueprints.

I will publish the others after survival testing on those, to know what to add in the item description ;)

It's an old Blueprint that I always save in the new game version when it updates and lucky me cause my local blueprint always works but I can't update my old Workshop item so I tried after a subscriber asked me about this and it worked!

So I am lucky and the ME Communuty in the same time

How do you make these? I notice you have ones made of full arches and inside corners too in the 3rd to last pic. Do you have to modify the blueprint after like an SE supergrid?