Pneumatic Arm Chopper

One of the many projects I worked on while at Universal Studios was this arm chopping rig that I designed for the House of 1000 Corpses maze for Halloween Horror Nights 2019. We built two of these figures, altering the design slightly as one character was much smaller than the other. The chopping mechanism uses a pneumatic toggle clamp with air flow controls for motion control. I also added hard stops surrounded by springs to decrease the shock load throughout the armature. I worked closely with the props department to seamlessly integrate my designs with the characters they created.