Kevin's Hand (prosthetic multi tool mount)

thingiverse

This is the prosthesis I designed to empower Kevin with the ability to hold a violin bow securely. The central hub accepts a 1/2" rod that can be fitted with multiple attachments, providing versatility and flexibility in its use. A quick-release bicycle seat post connecter enables easy mounting of the rod onto the prosthetic arm, while adjustable velcro straps provide a snug and secure fit on Kevin's arm. I drew inspiration from an existing project (available online) that featured a complex system of smaller parts and a BOA lacing mechanism, but this proved to be uncomfortable for extended use, prompting me to explore alternative solutions. The wider velcro straps used in my design offer several advantages: they are more affordable, easier to implement, and distribute the holding force across a larger area of Kevin's arm, resulting in improved comfort during use. I also streamlined the design by consolidating it into a single TPU body, reducing the number of parts that need to be printed and making the process more efficient. With proper extruder settings, this design should print successfully on any 300mm x 300mm bed, regardless of the printer's capabilities with flexible materials. You can learn more about this project, Kevin, and the team behind it by visiting https://www.ksat.com/video/video/2020/02/07/fifth-grade-musician-with-prosthetic-honors-late-father-by-playing-violin/.