Boxing/punching puppet [beta]

The design may look a bit weird because the head is missing but this is a boxing/punching puppet. Basically, it is a torso with two articulated arms. The arms can be moved by pulling a lever from the back.
The model was designed in Solvespace and exported to STL for 3d-printing.
A few things need a bit of manual adjustment: the forearms were supposed to slip inside a hole in the hands but tolerances are not adjusted properly and it won't fit without filing.
I'll possibly polish this design and reupload but I thought I'd share it.
The joints between the pieces require some form of M3 bolt+nut. Alternatively, in my build I made a little rivet using the little cylinder of a ferrule.