Bolted Closed - Mechanical Brain Teaser Review

Remove the ball from the stand by figuring out this challenging puzzle. The fixed nut on the double ended bolt holds the ball and the two brass pillars protruding from the base make this seem to be an impossible task but never fear - there is a way. By Jean Claude Constantin measures 3-7/8" x 2-1/4" x 2-1/2". Made of wood brass and steel. Solution included. Read more...