The walls are built with the following materials:

1 piece 1/2 inch sanded birch plywood 4 by 8 sheet

1 piece of 1/4 inch sanded Birch plywood 4 foot by 8 foot

4 1 by 2 piece of wood as ribs

2 partial cut arches from 3/4  utility grade plywood

2 bottles tight-bond II glue ( 1 gallon used for entire build)