Fan Saw trap - the peeler

This trap is for a test only, similar to the Freezer, the Pig Vat or the Rack from the third movie. In this case there would be an athletic person held down to a rotating cylinder with hooks all over his body pierced into his skin, all connected to a wire.

After the tested subject receives his instructions, the gears will start turning, and eventually tear off the skin from the athlete. The subject's mission is to place his leg in the gears to stop the rotation. This will break his leg, but in return, sensors will stop the gear rotation, and a key will emerge from a trap door in the floor, as well as a cellphone to call for help.