The Gravity Pin puzzle box is based on an
antique American folk art design. A large, and difficult to access, interior make this a
great storage box. This is one of the most complex puzzle boxes Heartwood makes - with
multiple moving lid parts. They are constructed from solid Burl Walnut & Maple and
have smooth working puzzle components.
A mechanical puzzle is a self-contained object, composed
of one or more parts, which involves a problem for one person to solve by manipulation
using logic, reasoning, insight, luck, and/or dexterity. - Jerry Slocum