Last Wednesday my balancing robot kind of overbalanced, leapt off the desk and shattered on the floor. You can see the awful damage here. At the time I said that all I'd have to do is design some replacement parts, print them out, and I'd have him back on his wheels again.
So I have.
These are the FreeCad designs for the two plates that were broken. I did some careful measurement, wrote some Python to do the designs (it's a strange way to work, but I like it) and then printed them out and put everything back together. And it all works, which is nice. I think the new pieces are quite a bit stronger than the old ones. And if they break, I can just change one value in the program, run it again and print out some thicker ones..