Penny
Pincher is a magic trick for children, based on that oldtime
favourite, the Chinese Wallet. Put the shiny new penny (supplied)
into the wallet, follow the instructions on the reverse
of the packet, and you'll soon be able to make the penny
disappear and re-appear at will! See
if you can work out from the animation how the trick is
done, then check out the explanation below to see if you're
right.

The
secret of Penny Pincher is simple but ingenious. The lid opens
two ways. This is possible due to a cunning hinge system which
mathematically is described as a tri-tetraflexagon hinge.
(The same double-action hinge is used in that other children's
favourite, Jacob's Ladder. See our Foldaway
Finger Flipper for an example).
You
will see from the animation below that as the"lid"
opens from first one end then the other, the white coinholder
is transferred from the "base" to the "lid"
and back again. The coinholder has a coin-sized recess on
each side and first one then the other is revealed as the
is lid opened at different ends. If you put a penny in the
circular hole, it will be hidden when you open the other end.
It
merely remains to devise a way of handling Penny Pincher such
that you can open it from either end without giving the game
away.

Look
at the animation at the top of this page. See how the magician
is turning it over - first from side to side, then end over
end, and finally from side to side again. The side to side
turns cancel each other out (it's turned upside down, then
back again), so the outcome of that sequence is that the wallet
is turned upside down once, end over end. Now notice the red
and green stripes on either side of the wallet. They have
been arranged so that when you turn Penny Pincher upside down
once, end over end, the colours still face the same way. If
you open the lid from the end nearest the green stripe, the
coinholder will always be on the base.
Put
it all together and you have a way of turning the wallet upside
down and opening it from the other end without seeming to
have done anything suspicious. You are now ready to begin
pinching pennies. If you make other people's pennies disappear
rather than your own, your Penny Pincher will pay for itself
with only 300 victims.
Finally,
here's a variation you could use as an encore. Once you've
made the penny disappear, place another small coin (5p is
ideal in the UK) inside the Penny Pincher, then go through
the routine once more. When you open the wallet this time,
it will seem as though one coin has changed into another.
Made
from wood veneer with nylon hinges, Penny Pincher will stand
up to the roughest handling from little magicians.
Price
: £3.00
(U.K Pounds Sterling)
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