At this point I suppose I've become the de facto repair guy in my robotics lab. So recently, when our biped robot Hume broke both of its knees (I don't want to give away anyone's research secrets, but it was doing something that is stressful on the knees), I got to make some new ones. The knee joints are fairly complex and I was not interested in milling them by hand, so I modified the existing drawings to eliminate the stress focus points then sent them off to these guys to be manufactured. So here they are, Hume's new knee joints, ready to be installed, less than a week after we drew them. Lovely.