"Regal has done it again

Joel's Book Test :

a dream sequence where the participant reads your mind

Why do card tricks work

"Great for zoom shows

Stahl durch Messing Engblom "Regal has done it againYou have a drilled brass block, a brass screw with a nut, and a steel ball examined. Then you push the screw through the block and secure it with the nut. The steel ball goes on top. Suddenly, very slowly and in full view, it penetrates the screw and falls out of the bottom of the block! At the end everything can be examined again. Nevertheless, there's nothing to add or secretly put aside. Only the items mentioned are used for this precision