Notice This small tutorial take into account that you can make an Interior and export it without any problem.
|Duplicate again and use vertex tool to make a wedge.|
|Duplicate again(while rotation hold shift to rotate at 15deg angles)|
|Vertex manipulation again|
|Then you smile and relax!|
Same doorway done differently. I dont think it will change anything in the final interior however it can help your workflow.
An other entrace. To minimize the number of solid I use I like to use the Clipping tool. In fact I could have used this for the first one too. I don't know if in the end it make your diff to be smaller *shrugs* but I think so. I like to keep my models as clean as possible.
|By clicking a few times on the Icons of vertex tools and Clipping tools you can have options. Quite handy sometimes.|
|Do Keep everything snapped to the grid! Very important. When you scale group of solid you might end up with a few un-snapped objects. While you rotate, hold shift and after any manipulation make sure all your solid are snapped. Also hit Alt-P(check for problems)to make sure you dont have any concave face.|
|Concave solids are not supported! This means shapes with dents. You need to use multiple shapes to make tubes, arches etc.|