The performer shows a fan of normal-size playing cards. He passes his hand over the cards, and they visibly and instantly transform into a fan of JUMBO Cards, four times larger than normal-size playing cards.
This effect can also be performed in reverse by transforming a fan of jumbo cards to a fan of normal-size playing cards. This reverse presentation is effective in a routine combining the “Diminishing Cards” effect. You transform the jumbo cards into regular-size cards, then make them smaller and smaller until they finally vanish!
You are supplied with a very special mechanical outfit, which makes the trick self-working. All you require are a few handling trials, to handle the apparatus smoothly and correctly without fumbling.