Bolt Hand

grabcad

This submission in the e-NABLE Modular Prosthetic Terminal Device Challenge features a hand with three fingers, designed for ease of use and made from parts that can be 3D printed without supports. The hand has sections cut out to create an illusion of five fingers, while also reducing material use. It is versatile, able to clamp onto other objects like cups and rackets by adjusting the nuts and bolts on each finger and knuckle. Although heavier than another submission, this design offers greater durability. The hand is ambidextrous, suitable for either right or left-handed use. Glue can be added to prevent the thumb bolt wheel from slipping. The CAD files are from McMaster-Carr, with all STL files oriented for a z-up slicer. Additional required components include wing nuts and screws.