I did the homemade headset press out of threaded rod, bolts and some oversize washers, but forgot about removing the old cups - the most appropriate thing I had at the time was the shaft of a beach umbrella, which seems to fit the brief. I was not in a mood for wasting time, and thought there was a slim chance 1) I could continue to use the shaft with the umbrella, and 2) my wife might not notice what I had done, I may get out of it with a clean pair of heels. Neither of those things happened. Aside from being incredibly unwieldy, since I had to whack the end that was around 4 feet away from the frame,when pressing against the inner edge of the headset cup, the material was very soft so the umbrella shaft just split and mushroomed as I worked. Because it was so soft and flaring, it scratched the inside of the head tube, and damaged the cups on the way out, and took a huge amount of time and noise to remove the cups. Because I had spent around 15 minutes wailing on the umbrella shaft, both ends were damaged and shortened by a few centimetres and there was not a hope of sliding the other umbrella part into it. There must be a term for this, I successfully failed with regards the tool use, but I did get the cups out, destroying everything in the process?