Twin Tube Block Penetration by Mel Babcock

Block Go, the effect where a solid square block drops through two square tubes separated by a glass or plastic plate was invented by prolific British inventor and magician J.F. Orrin c. 1925. It has been recreated by large and small manufacturers ever since.

Effect: Two tubes are shown empty. A block and a plaque of thick plastic are both shown to be solid. The plaque is set atop one tube, and the second tube is set on the plaque above the first tube. The block is now dropped into the top tube. It penetrates the plaque and drops into the bottom tube. Both tubes may then be shown empty.

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