Heres the wall after the bendable plywood has been glued screwed and tattooed.

As you can see the "wiggle wood" is quite flexible before being nailed on. I have used hundreds of sheets of this over the years without problems.

Shower wall

I have finally gotten started on the cabinetry d walls for the inside of the bus. This is the shower wall frame laying on its side ready for the bendable plywood. After laying out the rib work I pattern cut them to all be identical then glued and screwed them together. This shower will eventually be granite inside with a custom fiberglass ceiling.