TOPIC:

Robert,

Just move the subtraction solid from the Environment layer to any other layer (or create a new layer just for the solid) and deselect the subtraction solids from the Visibility selection for that layer, in the 3D view

This looks an interesting project. When you are completed, can we use this as an example as I dont think we have any multiple basement level examples. You would remain anonymous, especially if you live in Kensington. :)

I emailed my project as requested, and as you can see I have managed to create a subtraction solid. From your past help I can exclude the section of the adjacent building at the rear. If I want to hide the solid I can switch off the Environment layer, but then I lose the ground plane. How can I hide the solid. Can you help me please.

Robert F via email