Paint mixer

Simple paint mixer. Structurally reenforced.

One way to use it that I found works best is to find a threaded rod from a hardware store that is roughly the same max diameter as the hex hole. Heat it up with a torch (doesn't need to be red hot, enough so it can melt the material and stay hot enough as you screw it into the mixer) then screw it into the mixer. This makes it lock onto the rod. Don't grind off the end where you connect it to a drill or you will unbalance the shaft and it will wobble (annoying and not good for the drill). I've made a couple with it and it works great.

Update:
Added paint mixer 2! Refined it some. Added 45.5deg recess for the hex rod.