Ah thanks poorwill! But this isn't actually me. The tag "I did it myself" was intended to highlight the fact that the accident was self-inflicted. also on this persons channel is a video of the thumb two years later; it looks pretty good.
He also has a bunch of car videos and one of a car I presume he totaled. He seems to be a walking accident. If ever I cut a thumb off though your kind words will be the first think I think of :)