Alternate Solutions

This alternate solution has three prongs and a ball joint that can swivel 360 degrees. The fingers will close and open with a remote control.

This alternate solution has two prongs and a ball joint that can swivel 360 degrees. The fingers will close and open with a remote control.

This alternate solution has two prongs. It has no ball joint. The fingers will open and close by a pulley system above the surface.

This alternate solution has two prongs. It has no ball joint. The fingers will open and close by a hydraulic system consisting of syringes filled with liquids.