if you ask me what is the biggest thing or achievement I consider myself as being Mechanical Engineer, I would simply put it as not making some complex machines or new innovations, but helping humans at their level to make their life easy. I got chance to work with Disable people through my Enabling Engineering Lab where we help disables to live a normal life by creating projects.
In one such project, one of the nurse in Tennessee lost part of her Index and Pinky finger. We were approached by her and we could have created a simple mechanical finger type design but it is very important that we empathize with person. Nobody likes such robotic looking things on our body. This motivation helped us to design unique and attractive design. Moreover, It has also has arrangement to fit in artificial nails. In order to achieve higher resolution, SLA 3D printing was selected instead of FDM.