After losing four fingers on his left hand, fabricator Ian Davis learned his insurance wouldn't cover the cost of a prosthetic. "To be eligible for a prosthetic you would have to lose your palm as well," he was told, according to Interesting Engineering.

Davis then embarked on a mission to create his own prosthetic hand, adding functionality absent in off-the-shelf models. As one example, he's designed the fingers to be able to splay:

Davis has been documenting his progress on both his Instagram and YouTube channels. And intriguingly, he's now started experimenting with self-made power tool prosthetics that eliminate the "middleman" of fingers, and instead interface directly:

Enter a caption (optional)

Davis' company is called Acme Works Fabrication, and in addition to following his social media feeds linked above, you can learn details of his builds on this Reddit thread.