Universal Knuckles

*** Not an original idea ***
This is my take on a set of knuckle guards (brass knuckles) I spotted in a magazine a while back. It is just a test to see how fast I could prototype a set and print them out. Start to wearing, 2 hours! Created in Sketchup, sliced and printed with Cura on a Printrbot Simple kit (1405).

OBLIGATORY WARNING: Do not attempt to use these things!!

Note 1: After creating the basic model with guestimates for size, I had to scale them up for me. 1.25 the original size fits well.

Note 2: The model is not manifold at this time. Not sure where the major hangups are but it does not want to slice for me in Repetier (Slic3r or Cura).

Note 3: I really wanted to list this under 'jewelry', 'household goods', or some other such nonsense just for fun...