Spruce Wood Top Full Hollow Body Jazz Guitar DIY Project. Body Thickness: 69.7MM. Spruce plywood top, maple plywood back and sides, double F-shaped perforations, fully hollow thick body, multi-layer celluloid edging on the front and back. The body is unpainted and requires further processing; minor scratches, dents, and other imperfections are present. The picture shows the actual product. Stock Items, will go with surface Dirty, Paints&Wood Damages, Cracks, Scratches.