Some more progress today, cut the damaged upper stories out of foam core and did a dry fit




had to change my exacto blade right after starting this fortunately it went dull while I was doing the damage cuts
the box lid and smaller box make a good improvised jig.
I also made the first piece of debris

and dry fitted it

The foam core will be covered with a thin layer of balsa inscribed with brick work

You can see some misalignment on the top one ,this happened when I was interupted by a phone call i should be able to work around it