His "Sawing a woman in half" involved an electric circular saw some three to four feet in diameter mounted in an open frame. Blackstone's version differed from others in that the lady lay on a table that was pulled by a motor through the saw blade. Blackstone demonstrated the efficacy of the device by sawing noisily through a piece of lumber. Then a female assistant was placed on the saw table in full view, as wide metal restraints were clamped upon her midsection. The blade whirred and appeared to pass through her body, as ripping sounds were heard, the woman shrieked, and particles were scattered by the whirring blade. When the blade stopped she, of course, rose unharmed.