Designer: Franz Harary
Builder: Franz Harary Illusion Team

Two girls are seated in an open framework device which is bisected by a blade of solid aluminum. Two men from the audience are selected to hold on to the foot of each lady. While their feet are held, the young ladies are sliced in half and their top halves are revolved 180 degrees. When they stand to leave, the audience can see that the each lady has switched the top half of her body with the other lady.

https://youtu.be/l-N0qQ2vdcM