I saw an ad a few months ago for this stage effect. I remember seeing Harry Blackstone Jr. do this at the old Burt Reynold's theater in Jupiter, Fl. I would be interested to know of the opinion of the members of the Forum.
To describe this, it is the frame into which a plate of glass is inserted and then a large needle and thread is penetrated through the glass in each of four quadrants.
Do you think this is a "yawner" or "killer" or neither?