Invisible wall for a room

[scottsport]

In my 3D build I have a mezzanine that is supported by columns not walls. I have set up the ground - mezzanine in a layer by building a room but would like to know how I can now make the walls for that 'room' invisible so that just the columns are visible.

Thanks for any advice.

[okh]

Without knowing the details of your plan, how about:
Drawing a room without walls?
Drawing the walls and insert invisible frames to create the openings between columns?
Using walls set to minimum height and thickness?

You may also, of course, use short/thick walls as columns (useful for editing if they are to have same colour/texture as the nearby walls). But without the wall-enclosure you will not be able to auto-create the room.

ok

[SnakeGB]

do you want something like this



if so
use box
flatten to size for floor then raise it up
same for columns use box