Fin Gripper (Robotic/Prosthetic Hybrid) - Mark VI

pinshape

The Mark VI Fin Gripper - Black Ram Hand. This hand was designed using the innovative Fin Ray Effect, giving the wearer the ability to grasp soft or oddly shaped items that rigid claws or fingers cannot hold. Watch the hand in action: Each Fin Grip finger must be printed with a flexible material (I have used Ninja Flex for this one). Since I am unable to print flexible filaments on my own printer, I ordered the parts through 3D Hubs. The filament should be between 60-80 Shore A hardness (85 Duro shown, which was still slightly stiff). The hand is mechanically wrist-powered and requires a certain amount of palm space for the wearer to push against it. It converts the rotation of the wrist into a linear sliding motion to activate the end gripper. When the wrist is bent down, the slider pulls back, closing the hand. When the wrist is straightened, the slider pushes forward, opening the hand. Assembly is the same as the Mark V, and full instructions can be found here: https://www.instructables.com/... As seen, the fingers flex around the object and then hold it in place. There are two versions available: a 2-finger "pincer" and a 3-finger "Tri-claw". Print: 14 x Bolts 10 x Nuts 3 x Fingrips - Print in Flexible filament or resin (60-80 Duro - Shore A) 3 x Hinges 1 each of the remaining parts. If the fit of the parts is tight, lightly sand them back with a file. The Black Ram Hand was designed to be an assistive technology tool/platform for allowing individuals to design and use their own specific manipulators for individual tasks. This is similar to how robotic grippers and end-effectors are designed for a specific goal. The Black Ram Hand aims to help those with missing fingers or conditions such as Dupuytren's Contracture.