This prosthesis has been designed to help those people with missing fingers.
It has been modelled keeping in mind the following principles:
I have included a version without thumb for those who have their own finger.
The fingers flex when they are pulled by strings, such as fishing line, and extend automatically with the help of elastic cord. A fabric strap with velcro is needed to secure the prosthesis to the arm.
You can download the original file blender, and thus can be studied and modified to improve its performance.
This design is based on my previous design.
You can download and view files here: http://www.thingiverse.com/thing:1489003