Working on the fold-flat parts. This is a test build for the large bottom level (14x12"). The structure is a full size base, then the middle layer with recess areas for the insertion flaps of the wall modules and then the texture layer. The inserted flaps are held by friction in place.
And in this case another recess and texture level for the inner wall. So five layers! Very sturdy ... and flat for storage.
The perimeter walk for this layer is 2" wide. Enough for lots of ninja vs samurai action. Or in this case dealing with an Oni!
Mental note to self. Don't hastily glue parts together when the better half is waiting for you to go shopping. The center area should look like a cross shape pattern in the middle
Next are the walls with insertion flaps ...