Lunet is a low-cost mechanical finger prosthesis designed to provide finger amputees around the world with an accessible solution to restore the functionality of their amputated fingers. Produced entirely through 3D printing, Lunet can be manufactured quickly at low cost and personalized in CMF per the user. Through parametric modeling and a modular design, Lunet can be configured to perfectly fit any amputeeās anatomical dimensions. Lunet features a novel finger mechanism and modular snap-together design requiring zero metal fasteners, no adhesives, nor any special tools to assemble.