You show a tube completely empty.
You show a bottle. It is not gimmicked in any way.
You pass the bottle through the tube & nothing happens.
You pass the bottle through the tube a 2nd time. It goes very slowly into the tube. Till the last moment the bottle enters into the tube, there is nothing at the bottom of the bottle.
The bottle is taken out of the tube and miraculously there is a red silk inside the bottle now.
A diabolical method.
Easy to do.
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