3/4-inch Baltic Birch plywood (one 4' x 4' sheet). Baltic birch features void-free cross-bands that hold screws exceptionally well.
These are specialized pieces of furniture designed for solo or couple play, utilizing a pivot or "rocking" mechanism to provide hands-free movement. Pdf Monkey Rocker Plans - Google Groups monkey rocker plans
Cons
High-quality, non-toxic wood glue (Type I or Type II). 3/4-inch Baltic Birch plywood (one 4' x 4' sheet)