Did anyone else read the title and imagine humans stirred up in a big beaker of water?
Anyway… We did a gag for a film where a guy is hanged. I designed the rig and the director and I put it together. He tested it before we put the actor in it. This is what we did: We got a climbing harness and a chest strap from REI. We also picked up some carabiners and a hundred feet of 3/16" cable. We attached a 'biner to the climbing harness and attached the cable to it. We put another 'biner on the chest strap (on the actor’s back) and passed the cable through it. (Since he was supposed to be hanged by the neck, the chest strap with the cable attached to it kept him upright.) We looked for a pully strong enough to hold a 160 pound actor, but could not locate one at the local hardware store. Instead we attached another carabiner to a fire escape. We passed the cable through it and attached the free end to the trailer hitch on my Jeep. Using extreme caution, one of the crew (who happened to be a cop, so we figured he knew how to drive) inched the Jeep forward to take up the small amount of slack in the cable. (Not the best idea! What if his foot slipped on the accellerator? :eek: )
So now we had a cable attached to the climbing harness the actor was wearing, that went up the actor’s back through a carabiner on the chest strap, stright up to the 'biner on the fire escape, and then diagonally to the Jeep. The diagonal part of the cable was out of frame. We had three strong guys out of the frame who pushed down on the cable, lifting the actor about four feet off the ground.
Hanging your actor upside down presents a problem if our rig were used. The harness fits like a pair of shorts (more or less – legs through the hole, top around the waist). Wouldn’t be so good inverted. You’d have to find a full harness. We were originally going to use a surplus parachute harness (check your surplus stores), but it would have been too much work to cut the unneeded bits off and remove the hardware. We then looked for a similar harness for climbing. Unfortunately the only ones we found were child-size. We had very little time to come up with the rig, so we did what we did. If you have more time you could try to locate a full harness. (IIRC there are industrial safety/OSHA ones, only we didn’t have time to order one.)
Once you have the harness you can do the carabiner thing. Put one on the back of the waist strap. Put straps on the ankles and put a 'biner there to keep the actor from tipping. It’s better to use a pulley than to use a carabiner. (We did notice some wear in the 'biner from repeated hoisting.) You could use a single pulley and a diagonal cable, or you could use two cables so that the free end would hang down offstage. You could securely attach sandbags to it as counterweights.
I would not trust an actor’s safety to a 2 x 4. Make sure the structure is strong and stable.
This is probably not going to be comfortable. It probably won’t be excruciating, but still…
When we did our gag, we tested it before putting the actor in it. I know I already said that, but it bears repeating. The director had a good 30 or 40 pounds on the actor too. We knew that the harnesses were designed to hold a human who is climbing up a rock face. Eighth-ince cable would have worked, but we chose to use stronger cable for an extra margin of safety. The ‘noose’ around the actor’s neck was designed to fail under very little stress. We had two or three ‘football player types’ standing by to rescue the actor in case anything went wrong. We told the actor to signal us if he were in trouble by clutching at his neck and flailing his legs.
We had never done this before. We planned it out carefully before we made the rig. We made sure all of our components were up to the task. We made sure the fire escape was in good condition. We did a lot of testing to make sure it was as safe as it could be. We knew it would work. But we still took every precaution we could to ensure that the actor would not be harmed if something did go wrong.
Bottom line: Suspending an actor seems like a simple thing. Who hasn’t hung upside down on the monkey bars? But there is a lot of potential for disaster – especially with the actor hanging upside down. As Chronos said: Do not attempt this until you have consulted, preferably in person, with someone who is conversant in the safety issues.