Doctor Who Pinball White Wood

A white wood is one of the first prototype playfields.
It does not have any artwork,
cause the designer is still designing the playfield.
He checks the shots to see if there is good action.
If something needs to be moved,
he usually fills the holes and
drills new holes to move ramps and/or posts.

Sometimes a white wood gets so full of holes
that another white wood is made.
After a designed is "locked" down,
the playfield artwork can be started.

Of course, even the best of playfields
can change later in the design...
Much to the horror of the playfield artist...