When David Copperfield goes inside the first box there was a switch made,
Copperfield goes under the box and goes into the hollow stairs he then gets
carried away inside the hollow stairs. A look-alike in shadow form pretends
to walk through the first part of the wall, after he plays his part he gets
inside the hollow base platform. By that time the assistance's pull the
sheets away to show that he walked through the first part of the wall.
The stairs that Copperfield is in is behind the camera boom as it makes
a complete rotation over the wall. The assistants on the other side of the
wall take the same stairs and put it next to the other plate form.
The assistants climb the special stairs and hold up a small white sheet
of cloth. It looks like David Copperfield is pushing his and and face through
the cloth. The secret behind this action is that the person on the right
is just controlling a pair of fake hands which he controls with his right-hand.
The person on the left is just pushing a fake face through the cloth with
his left-hand.
The two assistants then drop the small sheet cloth and listen to the wall
to see if David is all right. They then slowly roll down the sheets to cover
the frame box up and make sure it is tucked in good, they go down the stairs
to wait for Copperfield to make his way through the second part of the wall.
All he has to do now is get out of the hollow stairs and inside the box
and watch his angles with the light. He then comes closer to the light so
it looks like he is coming through the second part of the wall. He pulls
the sheets away to reveal himself, the white cloth stays on the floor because
it contains the props.
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